u dont have to be fast or be able to block shots to shut down the cpu, just play man to man defense manually, if u gurad them tight, they ll just pass the ball. also in every game, there will be somebody that's unstoppable, when u find out who that is, just double team and put high pressure on him, u ll be able to stop him then. players like kobe, redd or ray, they like to drive to the bask et if they pass u, if they dont, they are just gonna settle for jump shot. I also found that big men like duncan, kg, when they r posting u up, u just bring another body on him, and put the arms up, they should just pass the ball. Also, u gotta to use help defense, when they drive to the paint, switch to the big man, and try to block em. U can never stop a superstar just by using one player
P.S. i guess the reason u have onbody grabs more than 10 boards is that u use different players to get rebounds, i like just use 1 or 2 player to get rebounds. when i was using rockets, i had yao averaging 18 reb per game, while t-mac was averaging 7 per game. I think i m a pretty good offensive rebounder....

i play 9 mins quarter btw.