At the Main Menu highlight Exhibition then press all four C buttons repeatedly until you hear a beep.
Call Home Runs
When Ken Griffey Jr. is up at bat pause the game then press Left Left Right Right Right Left Left on the DPad. Unpause the game.
Press using the DPad Up Up Down Left Left Right Right Left Left Down Up Up.
In Exhibition and at the Team Select screen press all 4 C buttons repeatly.
Rest Your Pitchers Quicker
If your pitcher is tired drop him into free agency then go and pick him back up.
In Exhibition choose your teams. Then at the Ballpark screen press all 4 C buttons simaltaneously until you hear a chime. Then press Z.
Sneak a Peek
Plug in two controllers but don't press any buttons on controller two. When the computer is pitching press R on controller two to see the pitcher's status and available pitches.
Submitted by: Phillip Gibson
While at bat press Right Left Up Down Right Left Up Down Right Left Up Down on the Dpad. Keep pressing these until the batter explodes.