Originally Posted by defender
When you look at all players with significant MLB careers on average Milb numbers will "predict" MLB numbers. If you add all the MiLB players who do not have significant MLB careers, then MiLB numbers are not very accurate.
One MLB season is also going to be very hit and miss at predicting career numbers. Most MLB players do not OPS 880+. I think most of us would have to get pretty good odds to bet Frazier can keep this up next year.
His numbers this year are not enough to convince me that he is at least a .750 bat going forward, however his MiLB numbers don't scream there is no way he can OPS .800 in the majors. I am just going to hope for the best.
The general rule of thumb, for hitters, is that walk and strikeout rates generally carry over rather well from minors to majors (though both improve with age). But power numbers in the minors are often misleading, hence the old adage 'minor league doubles become major league home runs.' Overall, though, the numbers translate rather well if you assume added power over time with most players.