Hammel was joking, of course. At least, he could have been. We'll have to wait and see when the right-hander's turn comes up in the rotation in August.
• Cubs' 2016 regular-season schedule
Pearl Jam also performed at Wrigley Field in July 2013, and Ernie Banks made it a special night when he took the stage with Vedder to sing his Cubs tribute song, "All the Way."
Vedder joined the Cubs last October during their playoff run, and he was in the clubhouse in Pittsburgh when they beat the Pirates in the National League Wild Card Game.
Ticket information about the concerts is not yet available.
Wrigley Field will be rocking in 2016. James Taylor will perform on June 30, Billy Joel will return on Aug. 26 (he sang there last August) and Luke Bryan will perform on Aug. 27.
Carrie Muskat is a reporter for MLB.com. She writes a blog, Muskat Ramblings. You can follow her on Twitter @CarrieMuskat and listen to her podcast. This story was not subject to the approval of Major League Baseball or its clubs.