Home Run:
When up to bat, press Square to change from contact to power. Then you need to
line up the upper corner on the side of the batting triangle with the pitching aid.
Unlock 2 bonus teams:
Select the Exhibition Mode and tap L1+L2 at the Team Selection screen. If you hear
a gong, you've been successful. If you don't hear the gong, keep tapping till it works.
Dingers in Batting Practice:
Enter that mode and the press R2+R1+L2+L1 at the Team Selection Screen.