Go to the options screen, select "Cheat Codes" and enter the code below. If you entered the code correctly, you will hear Tiger Woods say 'Oh Yeah'

CODES RESULT:
ALLTW3 All golfers
SUNDAY Super Tiger Woods
GODFATHER Dominic "The Don" Donatello
14COURSES All courses
MCRUFF Hamish
THESWING Jim Furyk
SUPERSTAR Josey "Superstar" Scott
COWGIRL Kellie Newman
JUSTINTIME Justin Leonard
XON Brad Faxon
IAM#1 Cedric "Ace" Andrews
YOYOYO Melvin "Yosh" Tanigawa
SOLITARY1 Solita Lopez
SS Steve Stricker
SINK Stewart Cink
ORANGES Stuart Appleby:
2TON Takeharu "Tsunami" Moto
TYNO Ty Tryon
VALENTINE Val "Sunshine" Summers
VJSING Vijay Singh
BANDPANTS Charles Howell III
CALCULATE Mark Calavecchia
TB Mark Omeara
YOYOYO Melvin "Yosh" Tanigawa