How does RP endurance (fatigue) work?

[GlenBrummer]

On the instructions online on the card, the SP endurance is explained but it cuts off with "........" in explaining RPs.

Do RPs automatically weaken at their max innings or must give up baserunners and if so, how many.

[LMBombers]

RPs fatigue exactly the same way SPs do except that if they pitch in 3 straight games they enter the 3rd game fatigued. They need 1 day off after pitching in 2 games in a row to remain at full endurance.