Go into create a player in season mode and type 
in these cheats[Will Marks]
 
Tiburon- Tiburon Team 
Elec Arts- EA Sports team
Stats Men- All time Statistical Leaders
Eighties- All 80's
Seventies- All 70's
Sixties- 1960 Confrence B
Howie- 1997 Confrence A
Lei- 1997 Confrence B
San Mateo- EA sports stadium
Maitland- Tiburon Complex

When the EA Spors logo comes up while the game is starting 
hold L+R+Z to see the ending cheat.

Cheat/Request[Andrew J Chappel III]
(1) How to get secret stadiums,(2)Make a code when a 
Quaterback,Kicker,and Punter can kick and throw the ball 
100 yds,(3)The runningback,Wide Receiver and your whole 
team having extreme speed like Michael Johnson,(4)Every 
time you win a super bowl,there should be a code for that 
team to play for example as the 1989 49ers,and (5)Also to 
get teams like the Frankfort Galaxy,Rhein Fire,Scottland 
Claymores,the London Monarchs and so on.