Moto GP 3 - Platform: Playstation 1

Unlock the real-life riders by beating these challenges:
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#10 ROBERTS JR, Kenny (Usa) Challenge #5 
#15 GIBERNAU, Sete (Spa) Challenge #14 
#17 VAN DER GOORBERGH, Jurgen (Ned) Challenge #21 
#19 JACQUE, Olivier (Fra) Challenge #90 
#20 RIBA, Pere (Spa) Challenge #17 
#21 HOPKINS, John (Aus) Challenge #18 
#3 BIAGGI, Max (Ita) Challenge #10 
#31 HARADA, Tetsuya (Jap) Challenge #3 
#4 BARROS, Alex (Bra) Challenge #9 
#46 ROSSI, Valentino (Ita) Challenge #12 
#55 LACONI, Regis (Fra) Challenge #19 
#56 NAKANO, Shinya (Jap) Challenge #11 
#6 ABE, Norick (Jap) Challenge #4 
#65 CAPIROSSI, Loris (Ita) Challenge #16 
#7 CHECA, Carlos (Spa) Challenge #7 
#74 KATO, Daijiro (Jap) Challenge #6 
#8 McCOY, Garry (Aus) Challenge #13 
#9 AOKI, Nobuatsu (Jap) Challenge #91 
#99 McWILLIAMS, Jeremy (UK) Challenge #20 

Beat those challenges to unlock those fictional riders:
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Hitomi Yoshino - Challenge #85 
Jack Slate     - Challenge #62 
Susumu Hori    - Challenge #1 

Unlock the Legend riders by beating Challenges:
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DOOHAN, Mick (Aus)    - Challenge #15 
GARDNER, Wayne (Aus)  - Challenge #87 
RAINEY, Wayne (Usa)   - Challenge #2 
SCHWANTZ, Kevin (Usa) - Challenge #12