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Last updated:
August 30, 1997

PC
Strike Out Code:
While pitching, if the batter fails to hit your first pitch, make the next pitch strike him out. Simultaneously press and hold 1, 2, 3, 4, on the keyboard, and then press Ctrl, Down, Alt, Shift, Right, Left, Space, Up.
EA Dream Team Code:
On the Team Select screen, press 1, 2, 1, 2, Ctrl. Then go to the end of the list of teams. The 33rd team will be the EA team. Submitted by Josh Keller
Stadium Code:
On the Stadium Select screen, press 1, 2, 1, 2 Ctrl then 2, 1 you'll hear a noise signifying you did the code right. Move over to the right, and you'll see the hidden stadiums. Submitted by Santiago Maristany
Underwear Code:
On the Team Select screen, press 1, 2, 1, 2, Shift, Ctrl. Submitted by Joshua Hofer
Homerun Code:
While you're up to bat press 1, 2, 3, 4, Up, Tab, Left, Right, Shift, Alt, Down and Ctrl. Submitted by SuPaFlY

PC Sound Codes
Hear The Announcers Talk About The Home Team:
During a game hold down 1, 2, 3, 4 and push Red, Green, Yellow (Gamepad). Jim and Buck talk about the home team. For the keyboard hold 1, 2 ,3, and 4 and push Shift, Alt, Ctrl. Submitted by Daniel Hellendag

Playstation
View The Announcers: (Trying to get this code to work)
If you hold down L1, L2, R1, R2, then press the Circle Button, Triangle Button, Square Button, X Button, X Button, Square Button, X Button, Circle Button, Triangle Button they will show the announcers Jim and Buck.
Super Wind: (Trying to get this code to work)
While you're at bat, hold R1, L1, R2, L2, and press the X Button five times, Circle Button five times, Up, Left, Up. Presented by Eric Daulton.
EA Dream Team Code:
On the Team Select screen, press L2, R2, L2, R2, Circle Button. Then go to the end of the list of teams. The 33rd team will be the EA Dreamteam.
Stadium Code:
On the Stadium Select screen (accessible off of the Controller Select screen), press L1, R1, L1, R1, Square Button. Then go all the way to the right on the Stadium Select screen and there will be 3 new stadiums.
Homerun Code:
When you are up to bat, press and hold R1, then R2, then L1, then L2, while still holding those press Up, Triangle Button, Left, Right, Square Button, Circle Button, Down, X Button. You'll hear the umpire if you did this right. Submitted by Joshua Hofer
Strikeout Code:
While pitching, if the batter fails to hit your first pitch, make the next pitch strike him out. Simultaneously press and hold L1, R1, L2, and R2. Keeping the buttons held, press X Button, Down, Circle Button, Square Button, Right, Left, Triangle Button, Up. Submitted by Joshua Hofer

Playstation Sound Codes
Game Sponsors:
Note: I found these codes myself so if you use them please give me credit. To hear the game be sponsored by various programmers press and hold L1, R1, L2, R2, and then one of these button combinations:

Stadium and Crowd:
To hear the announcers talk about the stadium and crowd, during the gameplay, simultaneously press and hold L1, R1, L2, and R2. Keeping the buttons held, press Square Button, Circle Button, Square Button. Submitted by Joshua Hofer
Weather:
To hear the announcers talk about the weather, during gameplay, simultaneously press and hold L1, R1, L2, and R2. Keeping the buttons held, press Circle Button, X Button, Circle Button. Submitted by Joshua Hofer
Sponsor:
To hear the announcer talk about the sponsor, during gameplay, simultaneously press and hold L1, R1, L2, and R2. Keeping the buttons held, press Triangle Button, Circle Button, Triangle Button. Submitted by Joshua Hofer
Crowd Cheers:
To hear the crowd go wild during gameplay, simultaneously press and hold L1, R1, L2, and R2. Keeping the buttons held, press Down, X Button, Down, X Button, Triangle Button. Submitted by Joshua Hofer
Crowd Jeers:
To hear the crowd boo during gameplay, simultaneously press and hold L1, R1, L2, and R2. Keeping the buttons held, press Down, X Button, Down, X Button, X Button. Submitted by Joshua Hofer

Strategy
While browsing around I found a good site called, Digital Sportspage and I read their strategy for Triple Play 98. It gave good strategy tips for the game in both Pitching/Fielding and Hitting. I recommend visiting the following links if you want help with Triple Play 98:
Digital Sportspage Triple Play 98 Strategy Guide Part 1
Digital Sportspage Triple Play 98 Strategy Guide Part 2