The Boston Red Sox today activated right-hander John Lackey from the disabled list and he will start this afternoon's series finale against the Houston Astros at Fenway Park. To make room for him on the 25-man roster, catcher Ryan Lavarnway was optioned to Triple-A Pawtucket after last night's game.

Executive Vice President/General Manager Ben Cherington made the announcement.

Lackey, 34, will make his second appearance of 2013 today. He left in the fifth inning of his season debut on April 6 in Toronto with a right biceps strain and was placed on the 15-day disabled list on April 10 (retroactive to April 7). Lackey made one rehabilitation start for Double-A Portland on April 22 and allowed three hits, walked two, and struck out five in 3.2 scoreless innings (67 pitches). He is 0-1 with a 4.15 ERA (2 ER/4.1 IP) and eight strikeouts for the Red Sox this season.

Recalled by Boston this past Thursday, Lavarnway, 25, did not appear for the Red Sox during his three-game stint. He will rejoin Pawtucket where in 11 games, all at catcher, he has batted .310 (13-for-42) with three doubles, one home run and seven RBI.