MotoGP 09/10

An easy way to do this:
- set AI on gentle
- play a single arcade race
- 3 laps is usually enough
- at the start wait untill everybody has passed you (don't accelerate at all)
- then ride upto the first section (indicated by green cones) while preventing to gain any time bonusses
- stop right in front of the section and let the time run out
- use the continue (A button) to play along
- overtake everyone and win the race

the reason for sticking behind at the beginning is because the AI drives much slower when you are behind. It may seem that all opponents are running away but at the end of about the second lap you should be able to catch them.

I did this on Mugello.

If you do catch up with the AI but not in time then try a longer tack (or one you're good at).

This is really easy when boosting the online. Simply choose an arcade race. Race all the way around the track except for a few hundred meters. Then let the timer run out, press continue and cross the finish line to win.