BOSTON—Although the most strenuous thing he does in any given week is reload his office printer's paper tray, Red Sox fan Sean Mooney, 41, said he believes he may have torn his rotator cuff. "Ooh, I'm gonna have to ice this tonight," said Mooney, rubbing the muscle he pulled while removing a Massachusetts tax-code reference book from his shelf. "Now I know how [Red Sox pitcher] Wade Miller felt." Doctors said Mooney's condition is probably soreness resulting from a lack of regular exercise.