Every time you lead by 20 in the 4-th quarter, your Coach subs out the starters to protect them from injuries. The blowout rule goes into effect, nomatter what orders you set for coach, he will still protect the starters. If you want your players to play 48 minutes, you have to set 5-9 players for the game (depending on the number of players you want to get 48 minutes for). With let them play, decent stamina and setting subs at reserve spot, might net you 36 mins before the blowout rule comes into effect.