The Yankees did not immediately provide an update on Montgomery’s condition. According to the YES Network’s Meredith Marakovits, the liner that struck Montgomery was hit by Sandy Leon of the Red Sox.
Montgomery had been recalled from Triple-A Scranton/Wilkes-Barre to start in place of left-hander CC Sabathia, who sustained a right knee injury during his last start at Toronto.
In 21 starts for New York, Montgomery has gone 7-6 with a 4.05 ERA.
Bryan Hoch has covered the Yankees for MLB.com since 2007. Follow him on Twitter @bryanhoch and on Facebook. This story was not subject to the approval of Major League Baseball or its clubs.