My eyes must really be going. Fox was showing Matt in the dugout and I couldn’t tell if he had a jersey on or not. Here’s a picture (no embed available) if you want to see for yourself why I may have been having such a hard time seeing it.
The Mets were dressed in pinstripes today, and MLB rule 3.03 say all players have to wear matching uniforms, and 4.07 further mentions players “in uniform” so I’m confident Matt was wearing one, I just can’t see it because I am a horrible looker.
You may recall that in 2007 Terry Francona was spot-checked by an umpire when it was suspected he did not have a uniform top on under his jacket.
You may also find this lengthy discussion of such things interesting.
Anyway, I should have my eyes checked, right?