I understand that pitcher fatigue adversely affects performance. Does the same principle apply to position players, or does their fatigue affect only injuries. Seems like I see fatigued players on other teams (in the playoffs for example) still performing surprisingly well.

I will watch for fielding. Seems to me like they still hit well and that there is little to me effect. I would expect there to be some effect, but not sure at what level it would be noticeable or how it could be detected

I agree with bripat's assessment, but as he said, no hard data.

Posted by hypnotoad on 7/23/2015 6:19:00 AM (view original):
I agree with bripat's assessment, but as he said, no hard data.

mchales_army has stated this on the record before as well and I trust what that guy says ...

personally, I do not tend to notice any change to in-game performance, but where I do notice an effect anecdotally is off-season training improvement to physical attributes, esp DUR and health.  Personally, I am very strict with my rest policies (I prefer to keep all my youngest / lowest-dur guys at 100% during the season), and i am consistently pleased after rollover because my rookie and low-A guys with durs in the 50s all jump 10+ points into the 60s (with 20 training), whereas when i look around at teams that notoriously run their low-minors guys into the ground, after rollover (also 20 training) their guys appear to improve more poorly in those physical training categories.  As a result, when those players eventually reach the majors I am able to play my best guys in a higher % of games because they all finish with 85+ dur, whereas other teams's guys might tend to get to the ML with 75 dur, so those teams have to either platoon their guys once they reach the ML, or rest them more often, or supposedly live with bad defense when their health % drops to 92% or whatever is the inflection point

a caveat - by running the players into the ground early on in low-A or wherever (ML years: 1), the player is playing in a higher volume of games and technically subjected to a higher volume of coaching, and to my eyes those players do tend to improve more in the skill categories (+2s more frequently in their development cycles). So it very well could be a trade-off of higher-skill + lower-dur versus lower-skill + higher-dur.  Pick your poison, but for me- since the regular season is so long, I prefer the game-by-game consistency of high dur. if you're like me then it's something to think about as you develop your prospects

Thanks, that's very interesting and makes sense! Except conceptually it doesn't make sense to me that performance in season wouldn't degrade. There's got to be a point when it does, though I'm looking at an opponent with fatigue levels in the high 80's/low 90's, and his hitters are raking.