This photo was also sent to me by Joseph Boyle, who sent the one I posted here on Sunday.
So there’s the first clue — it very likely came from the same series.
The pitcher is clearly Roger Clemens. Clemens pitched in five games in Wrigley Field as a member of the Astros from 2004-06 — that’s clearly a Houston uniform he’s wearing.
Indeed, Clemens started against the Cubs Wednesday, June 2, 2004, the day after the game depicted in the Sunday post.
So let’s see if the other things we see in the photo match that date.