Cheat mode
Hold [A] + [B] + [C] at the title screen. Keep those buttons held, then press [Start] as the title screen fades. Then, press [Start]x2 at the Bluesky logo. From top to bottom, set the options to 3, 1, 3. Then, hold [A] + [B] + [C] + [Start] until the screen fades. The Bluesky logo will appear again. Press [Start]x2 and the Bluesky option will be unlocked. Turn that option on to view the programmers. Press [Start] to use the team in exhibition mode.
Cycle through scoreboard animations
When the scoreboard shows an animation (homeruns, strikeout swinging, strikeout looking, pitcher change, etc.) push [Start] before it ends. Then, go to "Instant Replay", and watch the play you just made. When the replay is complete, the will appear again. Press the D-Pad to cycle through the animations.
Glitch: Thrown out after a single
After the CPU gets a single, throw the ball to the catcher then go to first base and throw it to the first baseman. The runner will be out.