Against all odds, from an early deficit to losing a one-run lead in the ninth inning, the Red Sox found a way to close out the Minnesota Twins in an 11-inning marathon last night at Fenway Park.

Now, the Sox must find a new closer.

Hours after Andrew Bailey went on the disabled list with inflammation in his right biceps, Joel Hanrahan walked off the mound in the ninth inning of an interminable 6-5 victory over the Twins with what the Red Sox have diagnosed as a strained right forearm that sounded even more ominous based on the right-hander’s description of what occurred.

Hanrahan traced the injury to a “pull” that he felt on a pitch that went to the backstop early in the ninth. After a few more pitches, Hanrahan thought the sensation had subsided, but after walking Josh Willingham, he tried throwing to first base.

“I got to the point where I tried to make a pickoff (throw) to first, and the ball barely got there,” Hanrahan said. “I threw one more, and I just couldn’t take it any more.”

Hanrahan will undergo an MRI exam today to determine the severity of the injury. But the Sox already are planning on life without both of their closers. After last night’s 4-hour, 44-minute game, which ended in the 11th on a two-out walkoff single to the base of the Wall by Stephen Drew (4-for-5, double, home run) that brought home Jarrod Saltalamacchia with the winning run, manager John Farrell met with general manager Ben Cherington and other members of the front office to determine who will close games if Bailey and Hanrahan are sidelined simultaneously.