How do you hit any really good southpaw?
It’s a well-known fact that a good lefthanded pitcher can be tougher to hit than a good righthander. I watched the Indians-Twins game last night (thank you, MLB ExtraInnings), and one of the really top-flight lefthanders in the league, C.C. Sabathia, just shut the Twins down. He gave up five hits, two of which were followed by spectacular double plays, and walked no one…and I think that last is one of the keys to being virtually unbeatable. Sabathia is a “contact” pitcher, which as my old pitching coach of decades ago put it, simply means “get the ball over the plate and make the batter hit it. Make him go after YOUR pitch, what you want him to hit.” So he doesn’t strike out a lot of batters, although I’ve seen him fan 10 0r 11—but he doesn’t walk anybody either.
Erik Bedard is another such pitcher, and when he’s really on he’s one of the toughest. I would think that the best solution is just to wait him out, hope he misses the plate enough times to draw a walk. Also, a pitcher with a motion such as you describe is prone to throw a wild pitch every now and then—I’ve seen that happen. So my suggestion is simply this: don’t even try to hit the guy. Wait him out. If you can foul off a few pitches, so much the better. Make him work. Drive up his pitch count. Sooner or later he’ll make a mistake. 8)