He was called out in the fifth, and Coghlan again argued the call. This time, May wasn't as patient.
Coghlan is the second Cubs player to be ejected this season. Anthony Rizzo was ejected on June 1 for arguing balls and strikes.
Carrie Muskat is a reporter for MLB.com. She writes a blog, Muskat Ramblings, and you can follow her on Twitter @CarrieMuskat. This story was not subject to the approval of Major League Baseball or its clubs.