Union midfielder Quinn Sullivan announced on social media Monday that he has torn his ACL. Sullivan exited Saturday’s game at D.C. United in the 12th minute. “I am gutted to not be able to finish this incredible season with the guys, but really proud to be a part of this team,” Sullivan wrote. The 21-year-old Homegrown has 12 career MLS goals and 21 assists in 122 appearances (61 starts). Sullivan was called into the U.S. national team camp in late May for a pair of friendlies before the Gold Cup.