OK, Marc, what about this example from a different team's opening series from the same league (
http://365.strat-o-matic.com/team/schedule/1432926)? Phil Regan (R3) pitched all three games for them, and in the third he entered as F4.
His appearances:
Game 1: 1 IP
Game 2: 3 IP
Game 3: 2 IP
In the first two games, he never pitched below F9, never topped his fatigue total of 3 in any one game, and did not exceed his fatigue rating + 2 (5, in this case) innings pitched, totaling 4 IP in the first two games before entering Game 3 as R4.
Shouldn't he have come in as F9 in Game 3, or am I missing something? (My guess is, like so many strat mysteries, this can be filed under "black box.")