NBA 2K7

easiest way to do these player achievements is with 2 controllers (NOTE: you must use 2 controllers from the beginning of the match and not change sides half way through a match or it nullifies the achievements you have obtained during that particular game)

pick the team which the player is on and half length you think is long enough to achieve the achievement criteria - i used 3 min halfs though some may need longer or less time.

for Shawn Marrion you need 25 pts and 15 rebounds (off or def) (Shawn is on the Phoenix Suns) for rebounds turn out of bounds off then run directly behind your own basket and take a shot, it should bounce off your own backboard and just catch it (doesn't matter if it bounces) - 1 rebound down quick and easy then just repeat for however many you need.

These player achievements are VERY annoying. To get his you just need to have him on the team and have him get 25 or more pts and 15 or more rebs. Set the game to rookie and move the sliders in your favor and move the CPUs to make them even worse. Shouldn't be too hard to get everything, especially if you set the time to max.