Crain is 2-3 this season, with a 0.74 ERA, a 1.15 WHIP and 19 holds, but is dealing with a sore shoulder and has not pitched since June 29. He was selected to his first All-Star game but was unable to pitch because of the injury.
He had a setback last week in trying to get back healthy enough to pitch, and it's uncertain when he will return to the mound.
“We cannot say enough about what Jesse has meant to our bullpen, and the positive impact he’s had on our young relievers, " White Sox general manager Rick Hahn said. "We certainly think (Jesse) has the ability to influence this year’s pennant race very positively for the Rays.”