Here is the full list of all 5 Major League Baseball 2K6 achievements worth 1,000 gamerscore.
Made an incredible wall climb catch.
Sent 15 batters back to the dugout by strikeouts with one pitcher.
Blasted 3 balls out of the park in one game with the same player.
Scored an astounding 20 runs in one game.
Stole an amazing 5 bases in one game.