The Chicago Cubs say they knew the risk when they traded for pitcher Mike Soroka -- who saw his velocity drop over his final few starts for the Washington Nationals before the deal. On Monday, Soroka left his first start for the Cubs because of  shoulder discomfort,

Starting pitcher Michael Soroka is heading to the injured list after exiting his first start as a member of the Chicago Cubs early on Monday.

The Cubs are sending rookie-ball infielder Ronny Cruz, 18, and Triple-A outfielder Christian Franklin, 25, to Washington in the trade. Cruz and Franklin are the Cubs’ No. 13 and 14 prospects, according to MLB Pipeline.