I think one thing that people often forget in regards to how old Joe has looked is how the concussion has affected his offseason preparation. Take this quote from the article for instance, “Some of the exercises we tried to do last year, I’d come up and be like, ‘Whoa.’ Now it’s gradually getting better,” he said. From what I gather, it sounds like off season prep was hindered no matter how good he said it was going at the time. It's not like the concussion only affected when he was at the plate. Prep also took a hit, which I believe explains some of the "aging" that we saw.