1
Career vs. LHB: .721 OPS
Career vs. RHB: .775 OPS
The data suggests he's not much better vs. lefties than righties. That may be partially because he's been trying to use a starter's rhythm or partially because he's not been healthy enough to snap off the slider well?
But thus far, I think French is a better bet to be a good LOOGY than Laffey.