A lengthy, meaty, and highly informative FanGraphs article from Matt Klaassen about platoon splits and how to actually estimate platoon skill. It pertains particularly to us because he mentions the newest Texas Ranger in there.

For a right-handed example, let’s use Ryan Garko, recently acquired by the Mariners as a platoon 1B/DH. Garko’s career wOBA is .347, .332 vs. RHP in 1229 PA, and .382 vs. LHP in 485 PA — a 14.4% difference. But he’s a righty, so we regress toward 2200 PA of the average (6.1%): (.144*485+.0611*2200)/(485+2200) for an estimated platoon skill of 7.6%. Using the CHONE projection of .345 wOBA, we’d estimate Garko to be a .338 hitter versus RHP, and .364 versus LHP. That’s a good hitter versus lefties, and while the .338 isn’t great for a 1B/DH, it isn’t as if he’s helpless against RHP.