Endurance ratings for relief pitchers

Looking a relief pitchers card, does the number after the slash affect performance? In other words - does “relief (2/2” mean only effective for two outs? I am playing ATG9 All.
Thank you
Thank you
Community forum
http://forum-365.strat-o-matic.com/community/
http://forum-365.strat-o-matic.com/community/viewtopic.php?f=17&t=650322