Updated FEB 24, 2015 11:49p ET  Ronda Rousey is not only one of the biggest stars in all of MMA, but she's also a champion defined by her dominance. Rousey is 10-0 in her career with finishes in every single bout, with only one making it past the first round. But she may face her greatest challenge this weekend vs. fellow undefeated fighter Cat Zingano in the main event of UFC 184 from Los Angeles.  Zingano was originally expected to face Rousey after defeating Miesha Tate in her debut, but a knee injury forced her to the sidelines for more than a year as she recovered. Zingano returned with a win last September, which then set up this showdown with Rousey as the two top women fighters in the world at 135 pounds square off.  Also on the card this weekend, highly touted prospect Holly Holm makes her long-awaited UFC debut as she faces former "Ultimate Fighter" competitor Raquel Pennington. Many believe Holm could be the person to finally dethrone Rousey one day, but she has to get through a very tough challenge in her debut.  To make sure you catch all the action from Los Angeles this week, here's a complete viewing and schedule guide for everything happening with UFC 184: Rousey vs. Zingano.  7 p.m. ET Friday - UFC 184: Rousey vs. Zingano weigh-ins  Where to watch: FOX Sports 1 or FOX Sports GO  To officially kick off the fight weekend, get ready to see all the fighters hit the scale before staring down just 24 hours away from the show. The weigh-ins can often tell the tale before the fights on Saturday night, so this is a great way to see who has the edge before even stepping foot in the cage.  7 p.m. ET Saturday - UFC 184: Rousey vs. Zingano early prelims  Where to watch: UFC Fight Pass  Two fights will kick off the night from Los Angeles live on the UFC's digital network, Fight Pass. The show includes:  James Krause vs. Valmir Lazaro  Masio Fullen vs. Alex Torres  8 p.m. ET Saturday - UFC 184: Rousey vs. Zingano prelims  Where to watch: FOX Sports 1 or FOX Sports GO  Before the main card starts on pay-per-view, keep it locked to FOX Sports 1 for the preliminary bouts of the evening, including a featured showdown between No. 13-ranked middleweight Mark Munoz as he faces Roan Carneiro, who returns to the UFC for the first time in more than six years. The fights included on the prelims:  Mark Munoz vs. Roan Carneiro  Roman Salazar vs. Norifumi "Kid" Yamamoto  Dhiego Lima vs. Tim Means  Derrick Lewis vs. Ruan Potts  10 p.m. ET Saturday - UFC 184: Rousey vs. Zingano  Somebody's "O" has to go in the main event of UFC 184, as Ronda Rousey (10-0) faces Cat Zingano (9-0) in a fight to determine the women's bantamweight champion. Also, Holly Holm makes her debut against tough-as-nails challenger Raquel Pennington. The full pay-per-view card is listed below.  MAIN EVENT: Ronda Rousey vs. Cat Zingano  Holly Holm vs. Raquel Pennington  Josh Koscheck vs. Jake Ellenberger  Alan Jouban vs. Richard Walsh  Tony Ferguson vs. Gleison Tibau  1:30 a.m. ET Sunday - UFC 184: Rousey vs. Zingano post-fight show  Where to watch: FOX Sports 1 or FOX Sports GO  After the night's action, don't change the channel. To hear a breakdown of all the events that just happened as well as exclusive post-fight interviews with the biggest winners of the night, keep it locked to FOX Sports 1 with the UFC post-fight show.
UFC 184 will showcase the women's bantamweight division in both the main and co-main events as Ronda Rousey puts her 135-pound title on the line against Cat Zingano while highly touted newcomer Holly Holm meets Raquel Pennington as the UFC returns to Los Angelest this weekend.