Major League Baseball Featuring Ken Griffey Jr.
Griffey's Homerun
This code will only work with Ken Griffey and on anything else but Home Run Dreby. When Griffey come up to bat press START, (on the D-Pad) Left, Left, Right, Right, Right, Left, Left and Griffey should point to the stands with his bat. And if you hit the very next pitch you'll hit a home run.
Credit Goes To: yaleelme@swbell.net & bradyfan@hotmail.com via N64cc
 Griffey's Homerun
 Hidden Teams
 Move Title Logo
 View Ending
Hidden Teams
At the mode selection screen (Exibition, Season, etc.) highlight 'Exibition.' Then press all 4 c's simultaneously about 10 times quickly. When you hear a selection sound, you've entered the code correctly. Now when you select your team (in exibition) you may choose from the Nintendo team and Angel Studios team.
Credit Goes To: Steve Schulz(core64@n64network.com) via N64cc

Move the Title Screen Logo
At the title screen hold Z to make the baseball in the logo stop spinning. Keep holding Z and then move the joystick to make the baseball rotate however you like. It's a useless trick, but a fun one.
Credit Goes To: IGN 64

View Ending
Ok here's a cool code that lets you view the credits that are shown after you beat a World Series Championship Season! First select "Exhibition" mode on the first screen. Then pick your teams. When you get to the stadium select screen pick whatever stadium you want but don't press start. Then press all four of the C buttons repeatedly until you hear a noise. Its thesame noise you hear when you select something on any of the menus during the game. It may take any amount of presses I've had times where it's taken anywhere between 12 to 50 button presses! Now press "Z" as if you were going to view the stadium. Get ready to laugh as your selected team runs out of the dugout and starts dancing, jumping , falling on the ground and many other funny things. This trick will show the team you chose for the SECOND Player.
Credit Goes To: C.J.(CJGineros@usa.net) via N64cc