ARLINGTON, Texas (AP) -- A.J. Pierzynski and Mike Napoli had run-producing hits in the first inning against their former team and the Boston Red Sox got above .500 for the first time since three games into the season with a series-clinching 5-2 victory at Texas on Sunday.
Napoli put the Red Sox ahead to stay with an RBI double, two batters before Pierzynski's two-run single. Both went to Boston as free agents after being in Texas -- Pierzynski was the Rangers primary catcher last season, and Napoli was there the previous two years.
John Lackey (5-2) struck out nine while allowing two runs over seven innings. The big right-hander threw 75 of 105 pitches for strikes without any walks.
Rangers lefty Robbie Ross (1-4) made it through 6 2/3 innings and a career-high 112 pitches, settling down after being down 4-0 after two innings.
Koji Uehara, who also went from Texas to Boston in 2013, worked a perfect ninth for his ninth straight save.
The Red Sox (19-18) won the last two games in the series after being held to one hit by Yu Darvish on Friday night. They have won six of their last eight games, and have a winning record for the first time since winning two of three in the season-opening series at Baltimore.
Shin-Soo Choo homered for the Rangers, who have lost 10 of 14 overall and dropped seven of their last nine home games.
Dustin Pedroia's two-out solo homer in the seventh chased Ross, and was the first Red Sox hit since Jonny Gomes' one-out single in the third.
Ross faced the minimum 13 batters between that, with only one runner reaching on an error being wiped out on a double play grounder.
It was the second homer for Pedroia, who led off the game with a double before Napoli drove him home.
Lackey, a Texas native, made his 20th road start against the Rangers, surpassing Seattle's Felix Hernandez for the most. Lackey is 14-15 overall with a 5.71 ERA in his career against Texas -- those are his most losses and highest ERA against any AL team.
Choo's fourth homer was an opposite-field shot to left-center in the fourth to make it 4-1. Mitch Moreland had an RBI double in the seventh before Lackey struck out his final two batters with two runners on base.
Notes: Boston is 10-4 against left-handed starters. ... This is the earliest Boston and Texas have completed a season series, which the Red Sox won 4-2. The Rangers had won the series each of the previous five seasons. .... Texas is 31-18 vs. Boston since 2009, still the best record by any Red Sox opponent in that span. ... Red Sox 3B Will Middlebrooks was scratched with soreness in his right hand after being hit by a pitch Saturday night. The Red Sox said it was a precautionary move and expect him to be available for their next game Tuesday. ... Napoli has reached base in 31 consecutive games. ... Rangers 3B Adrian Beltre, shifted toward shortstop, made a back-handed scoop catch after running a long way for David Ortiz's popup near the foul line to end the second. ... Boston is off Monday, its third of four scheduled off days in a 22-day span.