Use the following combos to activate the corresponding effect:
1920 Mode: B(2), A(4), X(2), UP
All Fielders Run: B, A(3), X(2), UP
Backwards Fielders: B(4), A(4), X(4), RIGHT
Fireworks: B, A(4), X, RIGHT
Ghost Fielders: B(3), A, X(3), DOWN
Nuke Ball: B(3), A(4), X(3), UP
Skull Ball: B(3), A(2), X(3), LEFT