I've heard Davis get credit for JBJ, but haven't heard what he himself has said. Farrell says "he's shortened his swing," (whatever that means); Cora on ESPN just gave a lengthy analysis, claiming he's "gone back to his mechanics in college" (but the film he presents to prove it doesn't seem to support that); one other ESPN analyst credited his stint at Pawtucket; others said (last year) he was "uncoachable." All I see is that he's gone to a leg kick, committing him to the swing (like Papi, or the old Hanley). Last year, he developed during his bad streak a 'foot tap' in his front foot--which I have only seen in one other hitter, oddly: Daniel Nava when he went from being a .300 hitter to a .150 hitter. Is his success dependent on a particular mechanical adjustment? (too bad we can't do that in, say, our golf swings!). Or is it the reverse: when you get a good, confident swing and have success, suddenly you 'look' better doing it (i.e., what we describe as 'mechanics' is often a function of success, rather than a cause of it).