I am in my first season and I'm noticing several of my minor league players with "%" levels dropping into the mid and even low 90's.  It's tough to rest them all in order to get them back to 100. 

Is there a threshold that should be avoided?  If guys are in dropping the 90's, 80's, 70's, when do they start really risking injuries and showing poor performance?

Thanks for your help guys.

The lower they get, the higher they are at risk for sustaining injury.  I don't believe there's a "magic number" or threshhold.

I generally start watching for fatigue in the second half of the season, right after the All-Star break.  Rest guys here and there as they start to dip below 98-100%.  When you get to the last 30 games of the season or so, and it looks like you have to fight for a playoff spot, then you start to push them as hard as you need to.  earlier if you have to.

I wouldn't worry about minor league players' fatigue, except for on potential MLers

One strategy that seems to work really well if you pay attention to your schedule is to pick rest days for your guys to coincide with the day before or day after a scheduled day off - then you get two days rest for the price of one.  For example, I may rest two of my best players the day before a day off and two different guys the day after.  I do this throughout the season and it's always worked well for me.  Most of my best guys don't play more than 140-145 games per season, and as a result I've rarely had guys less than 100% come playoff time.  Obviously context matters though and when you're in a race, it's harder to do.  One of my teams is in the playoffs now and several guys are hovering in the mid 90's...a first for me.

Rather than waiting for fatigue to happen, when you see a bad pitcher on the hill, that is the best time to utilize you bench players.  Your starters are going to need rest anyway, why not get that bench guy in there where he'll be more likely to contribute vs. a #5 rather than waiting for fatigue and forcing him in there vs. an ace.

Lot of times what I do is once a minor leaguer gets below 100 I platoon him, generally he gets back to 100 that way and he still gets playing time.

I've noticed that the vast majority of my minor league injuries come to players below 98%.    Since it's such a small sample size, I don't know if it's a "magic number" or not but it's a guideline I use for my real prospects.   98% = deactivate.

Posted by tecwrg on 8/23/2010 10:58:00 PM (view original):
The lower they get, the higher they are at risk for sustaining injury.  I don't believe there's a "magic number" or threshhold.

I generally start watching for fatigue in the second half of the season, right after the All-Star break.  Rest guys here and there as they start to dip below 98-100%.  When you get to the last 30 games of the season or so, and it looks like you have to fight for a playoff spot, then you start to push them as hard as you need to.  earlier if you have to.

My bad, this response was for my major league roster.

For minors, I let simmy manage my rosters, lineups, rotations, etc.  Autorest set for 98% for position players, 99% for pitchers.  Keep full rosters at all levels (19 pitchers, 16-19 position players).

For my major league position prospects, I keep track of who they are.  If they're at 100%, they're on the active roster and playing.  If they fall below 97%, they go inactive until they get back to 100%.  It's a two-minute check-in after each game cycle to make sure the ML prospects are playing if not fatigued.

Posted by MikeT23 on 8/24/2010 8:35:00 AM (view original):
I've noticed that the vast majority of my minor league injuries come to players below 98%.    Since it's such a small sample size, I don't know if it's a "magic number" or not but it's a guideline I use for my real prospects.   98% = deactivate.

+1 on this one.  I deactivate (real) prospects all the time when they get to 98.

I have not noticed any problems at 90% or above, though Medical/Training budget is obviously a factor here too. I normally set auto-rest at all levels for 90% and let simmy handle giving guys that fall below that a day off. If I am activating or deactivating guys from my minor league rosters (which only happens when dealing with the DL for me) and I notice someone into the mid-80s, I will probably deactivate them too, though I cant remember more than 2-3 times ever doing that.

As for the majors, I try to rest guys that fall under 100% as the season goes on, though if I am in a tight playoff race late in the season, everyone plays every game as long as they are at least at 90%. It really depends on your durability throughout the team. I have had teams that entered the postseason with everyone in the mid-90s or lower. On the other hand, just this season in Sandberg I took a team with everyone at 100% into the playoffs, and I have to believe that was a factor in me making a run all the way to Game 7 of the LCS.

I try to rest/platoon at 99% until the roster expansion.  Then, if I'm in a race, I'll let them fall to 97 by only resting one or two a game.  If I'm out of it, I use the callups to get some guys experience and keep everyone at 100 for safety from injuries.

The only time I had a problem possibly tied to fatigue came in last season's major-league LCS. My all-star (but 67 DU) CF, who was playing at 90 fatigue, dropped a flyball, leading to a Game 5 loss. (We then lost Game 6 and a chance at the WS). The guy had played very well the final month of the season, helping lead the team into the Wild Card, and was solid in the playoffs until the drop.

Lesson learned: Play with fire, you may get burned. This season, I made sure to keep him at 96 or better fatigue all season.