First go to the sign contract choose an enemy if ypour character is pro then do your entrance then when it's already training time put it into aggresive then exit go to fight store exit again go back to training put it into aggresive again then change the training type on speed,power or balance I pefer balance cause it can add all types then press x it can be negative or positive but mostly positive points.
When creating a character make him a heavywieght stance is speed tallest height and give more points on speed then power the rest is your choice at first fight train aggresive power then change the training into speed in every fight if it give some negative points reset the game and make it confident not aggresive don't bother to change power to speed if that happens cause it will still have the same results when you get into a fight it's really impossible you can't KO someone in every round I got mine KO in Round 1 in just 1 special punch
An easy way to gain stats quicker is by doing this: 1. Make sure your Fight Night Round 3 is on the autosave feature. 2. Do something so the game autosaves. 3. Sign a fight contract. 4. Choose your Fight Prep. 5. When the training screen comes up set it to AGRESSIVE. 6. Select your Stat Gain (Power, Balanced, Speed) 7. If your stats subtract, press HOME on your PSP and repeat steps 3-6
This usually gets your stats up by over 2 per gain, and if it does not work you can exit the game and retry it 'til it work =]