Cubs reliever Ethan Roberts exits game with apparent injury

(Photo credit: Charles LeClaire-USA TODAY Sports)
Chicago Cubs reliever Ethan Roberts exited Wednesday afternoon's game against the host Pittsburgh Pirates in the fourth inning due to an apparent injury.

Roberts came off the field with a trainer after allowing Yasmani Grandal's single with no outs in the fourth. Prior to Grandal's base hit, Roberts had served up a solo home run by Connor Joe before hitting Billy McKinney