The Chicago Cubs are already down their trade deadline rotation upgrade. Right-hander Michael Soroka, who came over from the Washington Nationals in a three-player trade last week, exited Monday's game ( CIN 3, CHC 2) with shoulder discomfort and is headed to the injured list. Soroka was two innings into his first start with the Cubs.

Michael Soroka exited his Chicago Cubs debut after two innings on Monday, and the right-hander is headed for the injured list because of right shoulder soreness. Manager Craig Counsell announced postgame that the team would replace the newcomer on the roster.

Michael Soroka fired a fastball to Reds catcher Tyler Stephenson in the second inning on Monday night and felt something grab in his right shoulder. The new Cubs starter – making his debut for the clu