I tried searching the forums, but it looks like all old data is gone and I couldn't find anything on this topic.

I'm trying to recall the effects of fatigue.  I know that for fielders, their fielding% will start to degrade slightly even at 99% fatigue (recalling the "perfect fielding" threads from years past, where even perfect fielders will make errors at slight fatigue), and the general consensus seemed to be that the magic number was about 92%.  Anything below will begin to have serious impact.

My questions relate to the many aspects of fatigue - mainly for fielding and hitting.  (My belief is that fatigue for pitching is so catastrophic that there's really no point in even trying to quantify the exact nature of the effects.  "Bad bad bad" should suffice.)

For hitting, I'm in a situation where I'm out of money for a DH, and I'm seriously considering going with a player with 200 PA.  Obviously, he's going to run into devastating fatigue.  What can I expect?  Will AVG degrade more or less than OBP?  (i.e., will he still draw walks?)  Are XBH effected?  (i.e., will he still get hits, but only singles as he can't leg 'em out anymore?)  Or will everything degrade evenly?  Exactly how bad will it be... will he be totally useless at 10-15% fatigue, or is the max penalty 50%?  75%?  I've never tried running someone down that far so I have no idea.

On the other hand, if I use full-PA DH and instead skimp on a right-fielder at similar PA... exactly how bad will his fielding get?  Is his range affected?  I'm looking at taking a "real" DH but using a 152 PA OF with A fielding and A++ range.  Will he still get + plays when exhausted?  Exactly how bad will his fielding % get?

Any help is greatly, greatly appreciated.

I don't know if this helps but fielding seems to have a linear decline whereas batting is on a bell curve....

I would avoid playing fatigued position players.

Can you go with a light-hitting catcher who walks a lot for your short PA guy?

I just finished a progressive season where I played Joe Girardi '01 down into the 40s. What I found interesting is that his ability to throw out runners didn't seem TOO degraded. (15 out of 40 with an A+ arm) and his fielding percentage for the year was still .988.

For the year he hit 145/209/200 in about 430 PA (RL stats 253 PA, 253/315/345).

For just the games below 60% he hit 127/195/162 in 339 AB. So it seems his walk rate was NOT severely degraded (23/339 tired, 32/406 overall)

JFranco77 wins the coveted 'Really-Freaking-Long-Post-of-the-Week' award. Congrats!

Posted by Trentonjoe on 12/10/2010 12:53:00 PM (view original):
I don't know if this helps but fielding seems to have a linear decline whereas batting is on a bell curve....

I would avoid playing fatigued position players.

do you know this for a fact? slightly fatigued players have a noticable drop in fielding. if my team is tired I'll run 1 or 2 guys below 90% and tire some bench players so I can keep everyone else at 100% and fielding well. of course DH is the ideal sacrificial lamb. 10-15% may be too extreme, probably better to reduce something else.

i would imagine all categories are reduced by fatigue.

The bell curve thing I am sure about.   They (admin) have said it numerous times.

I am not sure about the fielding penalty.  I think I got it from the forums.   It does appear to  be steep though.

Several years ago Tzentmeyer made some comments about fatigue. Of course I couldn't find a copy of this here or in my own notes. What I remember is that he said the effect of stamina on performance was linear to about 50% stamina. He also said that the effect of stamina on performance was about half (50%). So a player whose stamina is 98% or 2% fatigued is 99% effective. His 2% fatigue translates a 1% reduction in effectiveness. A player with stamina of 80%, 20% fatigued, is 90% effective. At stamina 50%, effectiveness is 75%.

He said that when stamina fell below 50% effectiveness fell off more rapidly. I don't believe he indicated how rapidly effectiveness declined or if the decline was linear or non-linear. He made no mention of differential effects of stamina on fielding, hitting, base running, etc.

Does anyone else remember this?

I really remember a bell curve.....I remember that they posted a graph of one with fatigue #'s but no y axis values.

cool stuff, this comes in handy... This is the first year I'm running into fatigue issues early in the season. Thanks for everyones input.

So if a player is at 98% (1% less effective) and is a .300 actual hitter how many points will his average decline?

Posted by chisox378 on 12/14/2010 1:23:00 PM (view original):
So if a player is at 98% (1% less effective) and is a .300 actual hitter how many points will his average decline?

Assuming his AVG# is .300 also, then 1% of .300 is 0.003, so he'd be at .297.

Interesting, thank you franco. By the way your boy 86 Julio Franco in my last season had 37 errors  !