There was a blurb in one of the Cubs.com articles that Sing was having problems with allergies / his contact lenses getting too dry and was having to switch to glasses, which made him uncomfortable hitting. That was given as a reason he hadn't been playing at all lately. I've lived that Hell before and didn't have to hit 95 MPH fastballs too! I've always wondered how contacts going crazy would effect a MLB type player. Gimme a couple years and I'll suggest remedies for you. Or, more likely, I'll tell you to see your optometrist. Just ask this guy: http://www.grandstandsports.com/images/1612.jpg He has all the answers