Food for thought....
Small sample size but Morneau versus lefties in his MLB career:
146 G, 255 AB, 13 BB, 59 K, 7 HR, .208, .258 OBP, .345 SLG
I'll bet he won't hit over .260 if he plays regularly.
"Think of how stupid the average person is, and realize half of them are stupider than that." ~George Carlin