Thanks to BCB reader David K'Miller, who took these photos and emailed them to me:
I live in the Tampa area and we went up to Dunedin to catch [Carlos] Zambrano's rehab game today. I'd say at least ¾ of the fans had on Cubs gear and it seemed like the Cubs were the home team. Zambrano got a big hand when he went out to warm up and when he took the mound in the 1st inning. He graciously signed autographs out near the bullpen about an inning after getting pulled from the game.
Check out the uniform number! Click on the photos to open larger versions in new browser windows.