pitcher fatigue edge case?

[sstein]

I’m seeing a pitcher fatigue behavior - the pitcher fatigues, but then grade advances because of a number of shutout innings. For instance, a B pitcher gives up a run in the first inning, but then gives up no runs for a number of innings. he might fatigue to a C, but then as a C gets a grade increase for 6 shutout innings and goes back to a B.

I would suggest a fix - once the pitcher passes his fatigue number he is not eligible for grade increases due to a string of shutout innings.