I don't think he's injured. Here's a piece I did on him at my blog last week that examines the numbers:
What's Wrong: Vernon Wells
I was quite happy to draft V-Dub on one of my teams this year, for a number of different reasons. I managed to snag him at a time in the draft when I thought he represented good value, and I'm a Jays fan - talk about the perfect confluence of potentially competing interests.
I was happy, that is, until the season started. Wells has disappointed thus far, and the usual chorus of 'over-rated' has sprung up yet again. Lets have a look at some numbers:
AVG AB R H 2B HR RBI BB SO SB XBH GO/AO BABIP
.259 220 34 57 17 5 29 18 35 5 23 0.58 .288
The two most concerning numbers have to be the .259 average, and the 5 homeruns, especially considering V-Dubs quick start to last season, where he hit 9 HR in the month of April alone. Wells BB/K ratio stands at 0.51, which is off his 2006 pace of 0.6, but not enough to get terribly worried. (ie a 10 walk/10 K swing over the course of the season would have him right back in line). However when combined with the fact that he seems to be flying out more than last year, (0.58 ratio of ground outs/ air outs as opposed to 0.87 in 2006) a picture starts to develop.
2006 aside, Wells has always been known as a slow starter. The question is, has he lost it? Are we looking at the first third of a down year, or something else entirely? Here are those same stats, projected over the same number of at bats as last year, in comparison with his 2006 totals:
Year AVG AB R H 2B HR RBI BB SO SB XBH GO/AO BABIP
2006 .303 611 91 185 40 32 106 54 90 17 77 0.87 .312
Proj .259 611 94 158 47 14 81 50 97 14 64 0.58 .288
Of note is the fact that V-Dub is on pace to hit more doubles than he did last year, and is also on pace to score more runs.
What does all this mean?
I think the numbers above indicate a hitter who isn't seeing the ball well rather than a hitter who has lost something over the previous year. I can hear it now, "oh great, all those numbers, just to confirm that he's in a slump".
What I mean by this is that these numbers, combined with all the at bats I've seen this year lead me to believe that Wells is a hitter that is one adjustment away from a hot streak. He's flying out more than usual and getting under some pitches he's used to driving. In addition, his batting average on balls in play is down 24 points from last year, and 11 points from his career BABIP of .299
Wells isn't hurt, and he's too young to be in decline - he's just streaky, a little unlucky, and hasn't found his groove yet.
So while a slight correction down from last years numbers can be expected given his rough start, the best part of Wells season is ahead of him, and he'll likely score more runs this year with the current Jays lineup (however injury - ridden).
In my opinion, this makes Vernon Wells an excellent buy low candidate - I fully expect his numbers to trend upwards as he hits his stride, and the Jays lineup gets healthier.
I'd be interested in hearing a few other opinions. If you want to see the numbers formatted a little better, hit the blog link in my profile. I've been watching VW all year long, and I think it's just a matter of time - selling him at a discount now would be a bad idea.