Yearly Innings for Starters

I play in a $60 million on-line league in RFK and stocked my team with defensive players. Schilling has started every four games. He now has pitched 250 innings and I've noticed he has gotten rocked has last 8 starts. Since he only pitched 204 innings last year, is he tired? The online rules would indicate otherwise.
Is there a rule with the on-line game that I'm missing?
Is there a rule with the on-line game that I'm missing?