The announcers in the game can say different things depending on what buttons you press. These are shown below:

Historical commentary Hold L1 + L2 + R1 + R2 and press Up, Triangle, Right, Circle.

Trivia Hold L1 + L2 + R1 + R2 and press Down, X, Right, Circle.

Weather Hold L1 + L2 + R1 + R2 and press X, Down, Triangle, Up.

Additional batter information Hold L1 + L2 + R1 + R2 and press Left, Square, Up, Triangle.

Note: This only effects some players.

To get a very large bat, hit two consecutive home runs in season mode.

To unlock Babe Ruth as a free agent, simply hit a home run with a pitcher in season mode

To unlock Cy Young as free agent, throw ten consecutive strike outs in season mode

To get the EA Sports Dream Team, first select the "Single Game" option from the main menu. Press [Left, Right] six times at the team selection screen. The phrase "Triple Play Baseball" will be spoken to confirm correct code entry. Alternately, hold L1 + R1 and press Left, Right(3), X at the team selection screen.

To unlock Hank Aaron as a free agent, hit four consecutive home runs or in a single game in season mode

To get a baseball on fire, throw six consecutive strike outs in season mode.

Once you win the World Series you can play as six extra teams (in order): World All-Stars, Puerto Rican All-Stars, Dominican Republic All-Stars, U.S.A. All-Stars, Legendary All-Stars, and the Triple Play 2001 Dream Team.

To get Pencil Head, strike out six consecutive times when batting in season mode.

Press Triangle or Square to hear air horns or Circle to hear whistles.

To unlock Satchel Paige as a free agent, throw three consecutive strike outs or in a single game in season mode.

To unlock Willie McCovey as a free agent, hit three consecutive home runs in season mode.

To get a strong arm, get caught stealing more than twice in one game in season mode.

To get a very large baseball, throw nine consecutive strike outs in season mode.