The following is a list of the maximum Stamina points possible in each of the different weight classes.
Heavyweight (265 lbs): 65
Light Heavyweight (205 lbs): 70
Middleweight (185 lbs): 75
Welterweight (170 lbs): 80
Lightweight (155 lbs): 85
Featherweight (145 lbs): 90
Bantamweight (135 lbs): 95
Flyweight (125 lbs): 100
Focus on spending Evolution points on improving submissions, movement, takedowns, and other skills during the early stages of Career mode as this will be more beneficial to you than using them to purchase additional moves. When you do eventually purchase moves look to get moves that will help you win matches like 'Submissive Side Control to Dominant' rather than moves that are more for show.
Unlock Bruce Lee and Royce Gracie:
Complete Career mode on the Pro difficulty setting so you get inducted into the Hall of Fame. When you accomplish this Bruce Lee and Royce Gracie will become unlocked when you retire.