DiGesu, who often displays his Mets fandom onstage and in photo shoots, took the mound with his bandmates before a Sunday game Geese bassist and avowed Mets fan Dominic DiGesu took the mound at Citi Field on Sunday afternoon to throw the ceremonial first pitch before New York’s game against the Colorado Rockies. Joined by bandmates Cameron Winter, Max Bassin, and Emily Green — all of them in custom Mets jerseys with their last names and the numbers 4 or 20 — DiGesu made an accurate throw that suggests he could have a decent career ahead of him at the high-A level if being the bassist in one of the best and coolest rock bands in years doesn’t pan out. “We had a surprise visit from Mr. Met at our most recent New York show and he made it clear that he was a fan, and that if we wanted to work together in the future on something that [the team] was down to do something,” DiGesu told WNYC this week. “I immediately was like, ‘Oh, my God!’ It’s always been an idea of mine to have Geese throw out the first pitch.…