Legendary Players Cheat: 
Save your profile once you have 5000 MVP Rewards points. Buy a Legendary Player and DO NOT save your profile. Add the Legendary Player to a team and save your roster. Then Load your profile and you will still have 5000 points and the Legendary Player will still be on the team. If you repeat the cheat you will be able to get all the Legendary Players on your existing teams. 

Legendary Players Glitch: 
Reach a desired amount of MVP points to spend on a Legendary Players. Spend the points to unlock a bonus, then save your roster. Do not save your profile. Instead, reload your profile. Your MVP points will be at the amount they were before you saved, but the purchased item will still be in your roster. Repeat as necessary and you will never lose MVP points. 

Unlimited MVP points: 
Get a good team and simulate an entire season, accomplishing as many goals as possible. Save the season and profile at seasons end but before going to the playoffs. Then exit and reload the season to recieve the same number of MVP points again. Save your profile exit and reload again and again to recieve the points at seasons end everytime.

Enter the following as a player names: 
Player Name: -  Effect:
Erik Kiss    -  Horrible Player.
John Prosen  -  Huge Hat.

The following bonuses are unlocked by scoring the corresponding amount of MVP points:

Al Kaline 2500 
Anaheim Angels 1986 Jerseys 250 
Astrodome 2500 
Atlanta Braves 1974 Jerseys 500 
Babe Ruth 5000 
Baltimore Orioles 1971 Jerseys 500 
Billy Williams 2500 
Bob Feller 3500 
Bob Gibson 4500 
Bob Lemon 3000 
Boston Red Sox 1903 Jerseys 1000 
Brooklyn Dodgers 1941 Jerseys 750 
Brooks Robinson 3500 
Catfish Hunter 3000 
Chicago Cubs 1954 Jerseys 750 
Chicago White Sox 1919 Jerseys 1000 
Cincinatti Reds 1970 Jerseys 500 
Cleveland Indians 1975 Jerseys 500 
Crosley Field 2500 
Cy Young 4500 
Detroit Tigers 1906 Jerseys 750 
Early Wynn 3500 
Eddie Matthews 4000 
Ferguson Jenkins 2500 
Forbes Field 5000 
Gaylord Perry 3500 
Griffith Stadium 3000 
Hal Newhouser 2500 
Harmon Killebrew 3500 
Honus Wagner 4500 
Houston Astros 1986 Jerseys 250 
Hoyt Wilhelm 3000 
Jackie Robinson 5000 
Jim Palmer 4000 
Jimmie Foxx 4000 
Joe Morgan 4000 
Juan Marichal 3500 
Kansas City Royals 1985 Jerseys 250 
Larry Doby 3000 
Lou Brock 3000 
Lou Gehrig 4500 
Luis Aprarico 3000 
Mel Ott 3500 
Mike Schmidt 4000 
Milwaukee Brewers 1982 Jerseys 250 
Minnesota Twins 1977 Jerseys 500 
Montreal Expos 1981 Jerseys 350 
New York Giants 1954 Jerseys 750 
New York Mets 1986 Jerseys 350 
New York Yankees 1927 Jerseys 1000 
Nolan Ryan 4500 
Oakland Athletics 1972 Jerseys 500 
Orlando Cepeda 3500 
Pee Wee Reese 3500 
Phil Niekro 2500 
Phil Rizzuto 3000 
Philadelphia Phillies 1980 Jerseys 500 
Pittsburgh Pirates 1916 Jerseys 750 
Pittsburgh Pirates 1979 Jerseys 500 
Ralph Kiner 2500 
Reggie Jackson 4500 
Richie Ashburn 2500 
Robin Roberts 2500 
Robin Yount 4000 
Rod Carew 3500 
Rollie Fingers 3500 
Roy Campanella 4500 
San Diego Padres 1984 Jerseys 350 
Satchel Paige 4500 
Seattle Mariners 1981 Jerseys 350 
Shibe Park Stadium 4000 
Sparky Anderson 4500 
Sportsman's Park 4000 
St. Louis Cardinals 1934 Jerseys 750 
Texas Rangers 1976 Jerseys 500 
The Polo Grounds 5000 
Tiger Stadium 3000 
Tom Seaver 4000 
Tommy Lasorda 4500 
Toronto Blue Jays 1992 Jerseys 250 
Ty Cobb 5000 
Walter Johnson 4500 
Warren Spahn 4000 
Washington Senators 1913 Jerseys 1000 
Whitey Ford 3500 
Willie McCovey 4500 
Willie Stargell 4000 
Yogi Berra 4500