Originally Posted by RedTeamGo!
Well, technically this season he is not hitting well against lefties. He gets on base at a decent clip but he has a .526 OPS this season against left handed pitchers. That is very low. A slugging percentage of .206 is downright awful.
Career .681 OPS against lefties is pretty bad as well. Bruce has a career .757 OPS vs lefties and an .852 OPS this season, which is downright excellent.
I suppose the answer to your question of why do people say Choo doesn't hit lefties well is because he does not.
First, you have to acknowledge the fact that OBP is the most important and valuable batting stats and the value of BB
Second, Having low SLG and OPS is inevitable consequence for Choo because he gets on base by BB a lot rather than by HIT.
Third, SLG and OPS are not as reliable batting statistics as OBP.
Slugging percentage weights hits, but not accurately (Is a double worth twice as much as a single? In short, no)
On-base plus slugging (OPS) does attempt to combine the different aspects of hitting into one metric, but it assumes that one percentage point of SLG is the same as that of OBP. In reality, a handy estimate is that OBP is around twice as valuable than SLG. (the exact ratio is x1.8)