The NCAA tournament is revved up and ready to roar.  After the debut of the First Four games on Tuesday and Wednesday, the remaining field of 64 is ready to take the court and begin the charge to the Final Four in Houston.  As the games tip off on the court, stick with USA TODAY as Erick Smith and Tim Gardner will be with you throughout the day to keep up with all the games.  You can also follow them on Twitter here: @erick_smith | @TimGardner_USAT  6:50 p.m.: That's all for the afternoon games. We'll be back tomorrow to cover Friday's games. Enjoy the rest of the action tonight.  6:42 p.m.: That's two big upsets in Denver as Richmond holds off Vanderbilt 69-66 when the Commodores can't hit a three-pointer at the buzzer. The 12th-seeded Spiders will face No. 13 Morehead State, which earlier beat Louisville.  6:36 p.m.: Vanderbilt's Festus Ezeli made the first of two free throws before intentionally missing the second. Richmond's Kevin Anderson rebounded with 3.4 seconds left. But he could only make the second of two foul shots. The Commodores call timeout down 69-66.  6:34 p.m.: Richmond's Darrius Garrett missed his free throw. Festus Ezeli rebounded and was fouled and will shoot two shots with Vanderbilt trailing 68-65 with 4.7 seconds left.  6:31 p.m.: Needing a three, Vanderbilt went inside and turned the ball over. Richmond is fouled and will shoot one-and-one with four seconds left and a 68-65 lead with 5.5 seconds left.  6:28 p.m.: Vanderbilt had a chance to tie but Lance Goulbourne missed the second of two free throws with 50 seconds left. Kevin Anderson responded with a jumper for Richmond and it's 68-65 with 18.7 seconds left.  6:25 p.m.: Looks like San Diego State won't have any concerns about its first NCAA tournament win. Aztecs lead Northern Colorado 58-40 with 5:11 left. Kawahi Leonard has 19 points to lead four double-digit scores for SDSU.  6:21 p.m.: Kevin Anderson's jumper with 2:59 left give Richmond a 66-63 advantage on Vanderbilt. The Spiders are more aggressive and faster to the ball right now than the Commodores.  6:15 p.m.: Northern Colorado has scored three points in seven minutes, helping San Diego State holds a 46-35 lead with under nine minutes left. Richmond hanging on to a 64-62 edge on Vanderbilt with under five minutes left.  6:07 p.m.: A pair of free throws by Justin Harper after a timeout with 7:54 left. has Richmond ahead of Vanderbilt 57-55. Spiders using 11-20 shooting from three-point range to inch ahead of the No. 5 seeded Commodores.  6:04 p.m.: And just like that San Diego State has pushed its lead to nine on James Rahon's three. Aztecs, who are going for their first NCAA tournament win, are up on Northern Colorado 44-35 with 12:56 left.  5:58 p.m.: It's also a tight game in Tucson with No. 2 seed San Diego State only leading Northern Colorado 35-32 with 15:24 left. Devon Beitzel has a game-high 16 points for the Bears.  5:56 p.m.: Richmond has taken its first lead of the game on another three-pointer by Kevin Anderson. He has three during a 12-0 run that has the Spiders ahead of Vanderbilt 51-48 with 11:37 left.  5:51 p.m.:Richmond tied Vanderbilt 48-48 with 12:31 left on consecutive three-pointers by Kevin Anderson. Spiders are on 9-0 run in last 2 1/2 minutes.  5:43 p.m.: Fast start for Vanderbilt in the second half. After Richmond tied the game with a three-pointer, the Commodores went on a 13-4 run to take a 48-39 lead with 15:54 left.  5:35 p.m.: About to get started in the second half in Denver. Vanderbilt leads Richmond 35-32. This is setting up for another close game, like all but one of the earlier six games.  5:29 p.m.: San Diego State goes to halftime with a 30-24 lead on Northern Colorado. That leaves Pittsburgh and UNC-Asheville as the only teams on the court. Panthers are closing out a comfortable win with a 67-51 lead with 3:01 left.  5:23 p.m.: That leaves San Diego State and Northern Colorado as the only two teams currently playing. Kawhi Leonard has 10 points, however the Aztecs only hold a 30-24 advantage with under two minutes left in the first half.  5:18 p.m.: Richmond trailed by as many as 11 in the first half, but Justin Harper's field goal in the final seconds before halftime pulls the Spiders to within 35-32 at intermission. Commodores center Festus Ezeli is 5-5 from the field and leads all scorers with 13 points.  5:13 p.m.: Not much drama in Washington, D.C. Pittsburgh has methodically taken control against UNC-Asheville and leads 56-39. Ashton Gibbs is leading the way for the Panthers with 19 points.  5:11 p.m.:Kentucky survives 59-57 as Princeton cannot get a shot off in the final two seconds. Josh Harrellson had a huge 15 points and 10 rebounds for the Wildcats. The road doesn't get any easier for Kentucky with a third-round matchup against West Virginia. Bob Huggins has beaten John Calipari in eight of nine meetings.  5:08 p.m.: And we have another dramatic last-second shot in the first afternoon! Brandon Knight's driving layup puts Kentucky ahead of Princeton 59-57 with under two seconds left. It was the first field of the game for Knight, the Wildcats leading scorer.  5:06 p.m.: And it's tied in Tampa. Dan Mavraides hits a jumper for Princeton to knot the score at 57. Kentucky has the ball after a timeout. There are 34 seconds left with a 1-second differential between the shot clock and game clock. Wildcats can stall for one shot.  5:04 p.m.: Princeton's defense gets a stop as Brandon Knight's jumper comes up short. Tigers call timeout with Kentucky ahead 57-55 with under a minute left.  5:01 p.m.: A leaner by Princeton's Dan Mavraides off the glass trims Kentucky's lead to 55-53 with 2:17 left. Pressure on the Wildcats to score after a timeout.  4:58 p.m.: Coming out of the last media timeout, Kentucky out front of Princeton 55-51 with 3:58 remaining. Still time for the Tigers to make a run, but they need to get going from the outside.  4:55 p.m.: Still not a lot of breathing room for Pittsburgh. The top-seeded Panthers lead UNC-Asheville 41-35 with 15 minutes left.  4:51 p.m.: Early going in Tucson with No. 2 seed San Diego State facing tournament newcomer North Carolina. Aztecs lead 11-8.  4:48 p.m.: Kentucky has cranked up its offense. Consecutive three-pointers by Terrence Jones and DeAndre Liggins pushes the Wildcats lead on Princeton to 53-48 with 5:38 left.  4:45 p.m.: A little more than eight minutes gone in Denver. Vanderbilt has seven points from Festus Ezeli and leads Richmond 12-7.  4:41 p.m.: And Kentucky has responded with its own 6-0 run. Princeton calls timeout with 9:36 left after a Doron Lamb layup. Wildcats lead 45-44.  4:32 p.m.: That was a short-lived lead for Kentucky. Six quick points by Princeton have the Tigers ahead 42-37 with 13:26 left. Wildcats are 1-7 from the field in the second half. Leading scorer Brandon Knight averaged 17.5 points per game, but is scoreless.  4:27 p.m.: Kentucky back ahead of Princeton on a three-point play by Josh Harrellson. There's 15:40 left, and the Wildcats might want to get a nice margin to avoid a nail-biter.  4:22 p.m.: As if it already hasn't been a crazy day, Princeton leads Kentucky 36-34 with 17 minutes left. The Wildcats have not scored in the second half as the Tigers are controlling tempo and frustrating the SEC tournament champions.  4:17 p.m.: After a slow start, Pittsburgh leads North Carolina-Asheville. But the lead is just 30-25 at halftime following a 14-7 run by the Bulldogs to end the first 20 minutes.  4:11 p.m:Another last-second winner in the first four games. Juan Fernandez's hit a leaner from near the free throw line with 0.4 seconds to give Temple a 66-64 defeat of Penn State.  4:08 p.m.: A Talor Battle three-pointer from beyond where the NBA line would be has tied Penn State and Temple at 64. Battle's shot was preceded by Juan Fernandez's free throw that put the Owls up by three. Temple has the ball with 11.4 seconds left.  4:05 p.m.: Temple creeps ahead of Penn State 63-61 with 28 seconds left. Ramone Moore scored the go-ahead basket to put the Owls up one. Juan Fernandez made the first of two free throws before a timeout.  4:00 p.m.: Could the Ivy League win again in the first round? Princeton trails Kentucky 34-33 at halftime. Wildcats guard Darius Miller leads all scorers with 15 points.  3:58 p.m.: Some drama in Tucson, too. Temple leads Penn State 58-57 with 3:10 remaining. Ramon Moore and Juan Fernandez doing the damage for the Owls with 40 points.  3:54 p.m.: And we have our first big upset of the tournament. No. 13 seed Morehead State beats No. 4 Louisville 62-61 when Kenneth Faried blocks the shot of Mike Marra at the buzzer. Eagles last beat the Cardinals in 1957.  3:53 p.m.: Morehead State grabs the lead! The Eagles ran down the clock trailing by two. Demonte Harper takes a three from the top of the key and sinks it. Louisville trails 62-61 has 3.8 seconds to take lead.  3:51 p.m.: Leading 61-59 Louisville's Elisha Justice missed the front end of a one-and-one. Morehead State rebounds and takes its final timeout with 23.8 seconds left. Chance to tie or take lead.  3:48 p.m.: Temple edges ahead of Penn State 51-48 with7:08 left after baskets by Juan Fernandez and Ramone Brown. The Lions have called timeout and will try to regroup.  3:44 p.m.: Louisville has responded faced with adversity. Terrance Jennings hit consecutive layups followed by a Elisha Justice three-pointer, and the Cardinals lead Morehead State 59-57 with 1:53 left.  3:40 p.m.: Princeton is hanging with Kentucky. Douglas Davis' three-pointer brings the Tigers within 22-20 with 5:50 left in the first half.  3:36 p.m.: Another three-pointer by Terrance Hill has Morehead State ahead of Louisville 57-52 with 5:16 left. Cardinals in trouble with Preston Knowles out with injury and Peyton Siva with four fouls.  3:33 p.m.: UNC-Asheville, seeking history as the first team to knock off a No. 1 seed in its opening game since the tournament expanded, leads Pittsburgh 7-5 early.  3:29 p.m.: Media timeout in Denver with 7:52 remaining. Morehead State trails Louisville 48-47 after Terrance Hill's three-pointer. Hill and Cardinals guard Chris Smith each have 15 points. Bad news for Louisville. Leading scorer Preston Knowles has left the game with a toe injury.  3:25 p.m.: Princeton's offense has found some life. A brief 6-0 run helps the Tigers trail Kentucky 15-10 with 11:23 left in the first half.  3:20 p.m.: Morehead State is not going away. Ty Proffitt's three-pointer cuts the Eagles' deficit against Louisville to 48-44 with under 10 minutes left.  3:15 p.m.: Kentucky off to a strong start with a 6-0 lead on Princeton with almost four minutes gone in the first half.  3:11 p.m.: A nice surge by Louisville. Six consecutive points put the Cardinals ahead 44-37. Morehead State needs a response as the Louisville pressure is starting to find success.  3:09 p.m.: The ball has been tipped in Tampa. Kentucky and Princeton playing for the right to face West Virginia in the third round.  3:03 p.m.: Louisville took its largest lead of four points, then Ty Proffitt hit a three-pointer to pull Morehead State to within 38-37 of the Cardinals with 15:45 left.  2:59 p.m.: After Penn State led for most of the first half, a late three-point play by Rahlir Jefferson has Temple ahead 35-33 at intermission.  2:55 p.m.: Morehead State and Louisville about to start second half with score tied at 33.  2:53 p.m.: Referees say the bucket counts and Butler emerges with a 60-58 victory over ODU in the Southeast Regional. Bulldogs now move on to face No. 1 seed Pittsburgh or No. 16 seed UNC-Asheville.  2:51 p.m.: BUTLER WINS! After Old Dominion tied the score, the Bulldogs held for a final shot. A mad scramble for a rebound in the closing seconds, Matt Howard gets in a layup as the buzzer sounds for our first buzzer beater of the NCAA tournament. Refs are looking at the monitor and to confirm it got off in time.  2:47 p.m.: ODU has the ball, down 58-56 with 0:36 seconds left. Time out on the floor again as the tournament's best game so far comes down to the wire. Butler 58, ODU 56.  2:44 p.m.: Time out on the floor and Butler holds a 58-54 lead on ODU, which has gone cold from the field in the second half. Monarchs are shooting just 36% from the floor now. ODU ball, 1:45 left in the game.  2:43 p.m.: Temple creeping closer to Penn State after Juan Fernandez and Ramon Moore make consecutive baskets. Lions lead 27-23 with 5:43 left.  2:40 p.m.: A nice sequence for Butler. After a layup by Shelvin Mack, Matt Howard is fouled grabbing a defensive rebound. Free throws upcoming after timeout with the Bulldogs up 56-52 with 2:43 left.  2:38 p.m.: Butler close to making it two of last year's Final Four teams to advance. Bulldogs leads Old Dominion 54-52 with 3:21 left.  2:36 p.m.: No late magic for Clemson. West Virginia advances with a 84-76 victory and will face the winner of Kentucky-Princeton in the third round. Mountaineers did a nice job weathering an early storm and wearing out the Tigers in the second half.  2:34 p.m.: Timeout in Tampa. West Virginia 83, Clemson 76 with 19 seconds left. Tigers need some steals and some three-pointers quick.  2:32 p.m.: Terrance Hill his a late three-pointer, and Morehead State ties Louisville 33-33 at halftime. The Eagles led most of the half before the Cardinals responded. Hill leads all scorers with 10 points.  2:31 p.m.: Butler clinging to a 54-30 lead with 5:19 left. Old Dominion has not made a field goal in the last five minutes.  2:28 p.m.: Penn State looking good off a fast start by Talor Battle. The Nittany Lions guard has nine early points. PSU 20, Temple 11, 11:57 left in first half.  2:25 p.m.: A questionable foul call on Clemson leads to two free throws by Joe Mazzulla. Then Dalton Pepper converts consecutive steals into a dunk and layup. West Virginia 80, Clemson 71, 1:13 left.  2:24 p.m.: Clemon's Andre Young his a three-pointer, then Tanner Smith is fouled on a fast break layup. Smith sinks both. West Virginia 74, Clemson 71, 1:49 left.  2:20 p.m.: Terrance Hill has seven points to lead Morehead State, which is not going away against Louisville. Eagles lead 23-14 with 6:32 left in first half.  2:18 p.m.: Devin Booker delivered the early highlight of the tournament with his follow dunk of a Clemson miss. Tigers have scored the last five points as we head to the final media timeout. West Virginia 72, Clemson 66, 2:51 left.  2:14 p.m.: Butler finally shoots its first two free throws of the game. Garrett Butcher makes both and Bulldogs lead Old Dominion 45-42 with 11:26 left.  2:11 p.m.: All four games ongoing as we type. Penn State and Temple tied at 2, while Morehead State is maintaining a 19-13 advantage on Louisville.  2:06 p.m.: Butler hanging tough with ODU and has a 43-42 lead. But both Butler big men -- Matt Howard and Andrew Smith -- each have four fouls with more than 10 minutes left in the game. Butler shooting the ball better in second half, but need to keep Smith and Howard in the game somehow. Butler 43, ODU 42, 12:16 left in game.  2:05 p.m.: Clemson still not able to make any headway into West Virginia's lead. Two Milton Jennings free throws bring the Tigers within 65-57 with 7:14 left.  1:59 p.m.: Butler and ODU continue to battle in a back-and-forth game. Frank Hassell gives ODU a two-point lead, but Butler fights back again and gets a reverse layup from Matt Howard to tie the game. Butler 38, ODU 38, 15:30 left.  1:59 p.m.: Not the start Louisville wanted. But the Cardinals are on the board with a dunk by Gorgui Dieng. Morehead State 10, Louisville 2, 13:47 left in first half.  1:55 p.m.: Still a tight one in Washington, D.C. Old Dominion 35, Butler 34, 16:33 remaining.  1:52 p.m.: West Virginia asserting itself in the second half behind the scoring of Darryl Bryant and Denis Kilicli. Mountaineers 56, Clemson 47, 11:37 remaining.  1:50 p.m.: Morehead State still has Louisville scoreless. Cardinals call timeout after three quick Eagles field goals. Morehead State 7, Louisville 0, 16:35 left first half.  1:45 p.m.: Offense at a premium in Denver. A Kenneth Faried free throw has Morehead State up 1-0 on Louisville three minutes into the first half.  1:41 p.m.: Good news for West Virginia. It is on a 17-3 run from end for first half to early in second half. Bad news for Mountaineers. Leading scorer Kevin Jones picked up his third foul. West Virginia 48, Clemson 43, 15:47 left.  1:34 p.m.: Under way in second half in Tampa. West Virginia gets first bucket. Clemson calls timeout. West Virginia 42, Clemson 40, 19:00 left.  1:27 p.m.: ODU gets a bucket on a second-chance opportunity in the closing seconds of the first half to take a two-point lead into halftime over Butler. Both teams hitting the offensive glass pretty well. Butler has yet to go to the free-throw line and is still shooting just 37% from the field. ODU 29, Butler 27, HALFTIME.  1:25 p.m.: Butler gets a three-pointer from Shelvin Mack to take back the lead over ODU. But the Monarchs get a buckey from Frank Hassell and the game is again tied. Back and forth they go. ODU 27, Butler 27, :39 second left in the half.  1:20 p.m.: Butler-ODU game hits the final media timeout of the first half. ODU leads 22-21 still and Monarchs are shooting 50% from the field. For Butler, Matt Howard and Andrew Smith both have two fouls. Not a good omen while trying to keep ODU's big lineup off the boards. ODU 22, Butler 21, 3:37 left in first half.  1:16 p.m.: Butler charged back into the lead with a three-pointer from Shawn Vanzant. ODU calls timeout. Butler 22, ODU 21, 4:12 left in first half  1:10 p.m.: Butler and ODU struggling to find the basket for a short bit. Several minutes later, just one bucket scored by Butler. ODU 21, Butler 19, 5:39 left in first half.  1:10 p.m.: All things considered, not a bad half for West Virginia. The Mountaineers fell behind Clemson by 10. They scored the final nine points of the half, capped by a three-pointer by Kevin Jones in the final seconds. They need to find an answer to Jerai Grant, who is having his way inside. All tied 40-40.  1:04 p.m.: ODU holds a 21-17 edge on Butler with 7:57 left in the first half. ODU is shooting 53% from the field. Butler just 38%. ODU has hit four three-pointers thus far. ODU 21, Butler 17.  12:58 p.m.: Jerai Grant dunks off a nice feed. He has 10 points. Clemson teammate Demontez Stitt has 11 as the Tigers lead 35-27 with 3:35 left in the first half.  12:55 p.m.: Five quick points by ODU give the Monarchs a 18-13 lead on Butler with 11:23 left in the first half. Media Timeout.  12:51 p.m.: Matt Howard scored five straight points for Butler, which took an 11-10 lead. But ODU responded with a quick three-ball to jump back ahead 13-11. Butler responds with a layup by Andrew Smith. Buter 13, Old Dominion 13, 13:51 left in first half.  12:48 p.m.: A 10-2 run by West Virginia pulled the Mountaineers within one. Demontez Stitt responds with a three-pointer. Clemson 27, West Virginia 23, 7:34 left in first half.  12:46 p.m.: Old Dominion off to a fast start, holds 9-6 lead on Butler at first media time out. Just under 16 minutes to play  12:41 p.m.: Kevin Jones with a three-pointer for West Virginia. Clemson again answers with Devin Booker field goal. Pace is very high in this game. Clemson 24, West Virginia 17, 9:15 left in first half.  12:36 p.m.: Timeout in Tampa. Darryl Bryant's two free throws stop the bleeding for West Virginia, but Demontez Stitt's layup makes the score Clemson 18, West Virginia 8 with 11:53 left in first half.  12:30 p.m.: Andre Young hits three-pointers on consecutive possessions and then two free throws. Not a good start for the Mountaineers. Clemson 15, West Virginia 6, 13:39 left in first half.  12:24 p.m.: First media timeout. No fatigue showing early for the Tigers, who are effectively using their size advantage inside. Clemson 7, West Virginia 2, 15:51 left in first half.  12:22 p.m.: Clemson playing faster and more efficient than West Virginia. A free throw by Tanner Smith makes the score 7-2 in favor of the Tigers with 16:52 left.  12:18 p.m.: Two free throws by Jerai Grant and a jumper Andre Young has Clemson up 4-0 on West Virginia with 19:00 left in the first half.  12:17 p.m.: Clemson wins the tip and the NCAA tournament has officially started.  12:10 p.m.: About five minutes from the start of Clemson-West Virginia. The Tigers got to bed at 5 a.m. yesterday after traveling to Florida following their defeat of UAB in the first round. Hopefully, they're rested and ready.  See photos of: Final Four, NCAA Tournament
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