Newbie question - Pitchers

Hi! I am playing 365 for the first time, Basic rules, not Maximum.

I have 4 SP's that can start on 3 days rest. Will they begin to lose effectiveness as the year goes on if I keep using them as a 4-man rotation? I have searched and can't find anything but F0-F9 fatigue for Maximum rules.

Is this something that I should worry about for later in my season? (I am only 18 games in to our regular season.)

Thank you!

No worries. The AI will keep throwing them out there every 4th day with no loss in effectiveness.