Were BA's down significantly in 2018? I mean .326 won the batting crown, and there were only 8 players in the entire NL who hit .300 or better. The first year since 1972 that the league average was below .250. That, to me, calls for some extrapolation. Maybe .300 was too high (although that is basically LeMahieu's career average) so let me revise it to .285.
Have you factored in not hitting in Coors anymore? If he hits .265, it's a wild success.
Also, there is no extrapolation for current pitching because that's the way the league is right now.
his home/away splits are awful but he's a good fielder. Might be a low-end bridge to Kieboom.
You're not getting him for less than 3 years. If Keiboom isn't going to be ready by 2020, you either trade him, or just accept a non-playoff season. I think people are overrating him.
He has a career OPS+ of 92 and a career wRC+ of 90. He’s a below average hitter that benefits from playing in Coors. And those stats both account for offensive environment, since they are adjusted to average. If you prefer batting average, he hit .317 at home and .229 away from Coors last season.
Even in his huge season in 2016 (130 wRC+), he had a big split. He batted .391 at home and .303 on the road.
This. Stay the freak away from LeMahieu
What I like is that LeMahieu generally puts the bat on the ball. (Strikeouts drive me crazy.) Also, he has always hit for a good batting average. Over .300 in 2017 and his .276 last year translates to close to .300 in less pitcher-dominant seasons. Lifetime average of .298 in almost 4000 PA's.
Career .264/.311/.362, .098 ISO, 81wRC+, 16.2 % K rate away from Coors.
To put that in perspective, Wilmer Difo is a career .250/.310/.358, .112 ISO, 77wRC+, 18.9 % hitter.
Wilmer is, at worst, on par, defensively with LeMahieu, I'd rather not spend 15+ million on him when I can play Difo < 1 million