A few pitches into his Friday morning bullpen session, Luis Gil stopped and said he could not go on. The 26-year-old reigning American League Rookie of the Year felt “tightness” in his right arm, said New York Yankees manager Aaron Boone a few hours later.

The Yankees are dealing with more injuries at spring training, as Aaron Boone said Luis Gil will be shut down with a lat strain.

The American League’s reigning Rookie of the Year has been shut down with a high-grade lat strain following an MRI, Aaron Boone told reporters on Monday. The Yankees ‘ manager said that Gil won’t throw for at least six weeks as he continues to get exams and opinions from doctors.