To get easy points in Dynasty, Play Now, or any other mode, get an outside scorer and press L + X. He will put the ball behind his back lay it up. It cannot be stopped even by a inside stopper and always works.
Slam Dunk Contest points:
When in the Slam Dunk Contest, tap X, then hold B to do MJ's 1988 Slam Dunk. If you do it from the free throw line it is an automatic 50.
Hold L + R then press X(2), Y to do the Vince Carter arm in the rim. If you hold it for a few seconds, he will put his arm pit in the rim for a 50 if you are lucky.
To do a 720 dunk for an automatic 50, while holding the R dunk modifier, run toward the basket and press the one foot 180 gather (Y). As soon as the gather motion starts, quickly rotate the Left Analog-stick counter-clockwise twice then press the Windmill Dunk (Y) again. Release Y just before completing the first rotation and you will automatically complete the second rotation. You will always get a 50 for completing this dunk. Note: The R modifier must be held for the entire dunk. Also, you must complete the 720 motion before pressing Y the second time to dunk.
To do a under the legs reverse dunk, starting from the corner of either baseline, run toward the basket and press the two foot 180 gather (A) just as you reach the word "HOUSTON*06" along the baseline. As soon as you start the gather motion, hold Pump Slam (B) button, releasing B as soon as the ball passes under the legs and make contact with the player's other hand. The timing is difficult and you will probably get hung on the rim until you get the timing correct. However, this dunk is also a 50 if you land it. Note: When you perform this dunk, make sure you are running in the red out of bounds area behind the goal and not on the court or the judges may only give you a 49.
Start from the baseline. Hold L then use B to gather and B to do the trick. Correct timing is required. If done correctly, your player will do the under the two legs dunk.
Adidas A3 Garnett 3 shoe:
Enter DRI239CZ49 as a code.
Jordan XX shoe:
Enter 2345MJ#1 as a code.
S. Carter 3 shoe:
Enter JZ3SCARTVY as a code.
T-Mac black shoe:
Enter 258SHQW95B as a code.
T-Mac 5 white shoe:
Enter HGS83KP234P as a code.