Here are a few hints to win easy.

When you start playing a race you will notice most of the time somebody attacks. Let one of your better cyclers follow the attacker(s) and make sure as long as the attack is on you get first in the prizes (sprint mountain, sprint sprint) and when you reach 100km still to go you let youre team (in the peloton) take over the lead (everybody exept your sprinter) at 80% normally you should regain and reduce the attacker(s) their lead.Keep on doing this and then the choise is yours. Do a mass sprint or you let your best cycler escape at 20 km before the end. this you do both at 99%.