Red Sox reliever Jenks leaves with back tightness

Red Sox reliever Bobby Jenks has left Boston’s game against the

Yankees after throwing just four pitches in the seventh inning

because of back tightness.

Working in relief of Jon Lester to start the seventh, Jenks

appeared to pull up after throwing ball three to Jorge Posada.

Catcher Jarrod Saltalamacchia went out to the mound and called for

help from the dugout. Replays on TV showed Jenks wincing. He

apparently said, ”my back.”

Manager Terry Francona and trainers checked on Jenks before the

right-hander walked off the field.

Matt Albers relieved with a 3-1 count and walked Posada – the

free pass was charged to Jenks.

Jenks missed nearly all of May with a right biceps strain. He

was activated from the disabled list May 31.