Indian Premier League Chairman Lalit Modi asked the players to behave like 'role models' and 'uphold the spirit of cricket'. He said this after the  Bangalore Royal Challengers captain Kevin Pietersen's dissent on an umpiring decision."Every incident in IPL is being closely monitored ... We have a zero-tolerance policy on player indiscipline and will take all necessary steps to ensure that the game is played in the true spirit of cricket," Modi said after Pietersen was let off with a warning for showing dissent on Australian umpire Simon Taufel's LBW decision against him in an IPL match against Chennai Super Kings.