i can understand if there is a match between country to country you can make out who can be more dangerous player and he can be bribed to play or not but in 20 20 (especially in IPL) whole team is not dependent on one player anybody on given day can perform well even our local players are doing well than in that case how can bookie decide which player should play and which not. so i think no bookie can give guarantee which team will win at the most we can predict