Apparently, this still works in 2K10

Original post by Jao for 2K9.

Saving replays from the players' Signature Highlights:

Stolen from chia51at opertionsports

After the game is over go to signature highlights.

Watch highlights for whatever player with the rebound/block/steal/assist you want to save... when that play comes up let it run for a second or two and press "b" to back up one screen.

Then move the Right Stick to bring the menu up, scroll to replay.

When the replay opens... at first it doesn't look like the right play was loaded.... don't worry... just be kind and rewind. Thats right rewind.... it starts off at the end of what the next play after the steal (I am not sure about rebounds or assist yet, but should be the same principle).

Then save as usual.

Also helps in what player highlights you want saved after the game because the zoom in/out buttons don't work when you view a replay via the Gametrack screen (at least for me anyway).