At best , Davydenko 's supporters were naively ignorant to tennis etiquette ; at worst , they cheated – yet went unpenalised by umpire Lars Graf .
At best , Davydenko 's supporters were naively ignorant of tennis etiquette ; at worst , they cheated - yet went without penality from umpire Lars Graf .
Google 's early stage backers in include California-based Stanford University and VC firms Kleiner Perkins and Sequoia Capital .