at Fenway Park
Tonight (7:05, NESN, WRKO 680): RHP Joba Chamberlain (2-3, 2.52 ERA) vs. RHP Josh Beckett (9-6, 3.98)
Tomorrow (3:55 p.m., Ch. 25, WRKO): LHP Andy Pettitte (11-7, 3.86) vs. RHP Tim Wakefield (6-7, 3.69).
Sunday (8:05 p.m., ESPN, WRKO): TBA vs. LHP Jon Lester (8-3, 3.20).
Head to head: The Red Sox lead the 18-game season series, 5-4.
Miscellany: Yankees catcher Jorge Posada went on the 15-day disabled list Monday with a sore right shoulder . . . Second baseman Robinson Cano is on a six-game multihit streak . . . New York has won its first six games since the All-Star break . . . The Yankees have 116 hits in their last 13 games.