Thanks to MIKE for sending this code in!
Bunt the ball down the third base line and you will automatically get your base if the third baseman gets it.
Thanks to CBLANKEN for sending this code in!
At the "ENTER CHEATS" screen enter the cheat code of "ATEMYBUIK". This will now enable an alien themed stadium called "ALIENAPOLIS" at the bottom of the stadium select list. When you play on this field team number two, or player number two in a homerun derby, will be an alien on a team called the "Abductors". The players remain the same except for their apperance.