With all that's been mentioned, I'm not sure SIMMY always pays attention to our designated ROLES. I know I've had more than a few SUA enter in the 6th when I'd rather they use a LR. However, I have LR set at ANY for entry and SUA at 6(or 8). So, when the 6th rolls around, I recognize my SUA may be used if SIMMY deems him the best "match". And this sometimes burns thru all available SUA before the LR pitches the 9th. I know it's my settings, and I could change them every game based on availability, but, in most cases, I'd rather use 4 SUA in 6-7-8-9 than 1 LR for 6-7. But, when I only have two SUA available due to fatigue, I might get the LR pitching that last inning or two.