Carl Crawford hit his fourth-career grand slam Saturday in Boston's 12-7 win over the Rangers.

Through his first month in Boston, Erik Bedard pitched well but received little in the way of run support. The Red Sox offense seemed intent on making up for that on Saturday.

Carl Crawford hit a grand slam into the right field stands in the bottom of the fourth inning to propel the Red Sox to a 12-7 victory over the Texas Rangers Saturday afternoon at Fenway. The big win comes a day after the Rangers crushed the Red Sox, 10-0.

The Red Sox blew the game wide open in the fourth inning. Boston scored eight runs on eight hits in the bottom of the fourth alone. The Sox went from losing 3-1 to establishing a lead of 9-3 in a marathon 36-minute half-inning that featured 19 separate plate appearances. Crawford’s grand slam came after Boston had chased Rangers starter Colby Lewis (3.1 IP, 7 H, 4 ER, 3 BB, 3 K) from the game.

Bedard (6.0 IP, 5 H, 3 ER, 4 BB, 6 K) finally picked up his first win in a Red Sox uniform, just over a month after he was traded from the Mariners. Despite struggling a little early on in the game, Bedard seemed to gain confidence from Boston’s big fourth inning and pitched well through his final two innings of work. The nine runs scored during Bedard’s six innings pitched were the most he has received in support all season, from either Boston or Seattle.

WHAT WENT RIGHT FOR THE RED SOX

–Crawford’s grand slam was the fourth of his career and the second slam of the season for Boston (David Ortiz hit one back on July 27 against the Royals). Crawford ended up going 2-for-5 on Saturday.

–Boston nearly had another grand slam in the bottom of the sixth when Dustin Pedroia hit a double off the top of the centerfield wall with the bases loaded, scoring three more for Boston.

–With the bases loaded in the bottom of the fourth, Mike Aviles hit in place of Jed Lowrie, who left the game with left-shoulder tightness. Aviles took advantage of the situation, singling to drive in a run, giving Boston the 4-3 lead and setting up Crawford’s grand slam.

–Adrian Gonzalez has helped carry the Red Sox all season long with his bat, but he used his glove on Saturday to help Bedard out of some early jams. With one out and runners on first and third in the top of the first inning, Michael Young hammered a line drive down the first-base line. Gonzalez calmly snatched the ball out of the air before stepping on first to double up Josh Hamilton and end the inning.

Then, in the top of the fourth, Gonzalez caught a popped-up bunt off the bat of Craig Gentry on a suicide-squeeze attempt. The first baseman then tagged Yorvit Torrealba, who had sprinted from third to home, for the unassisted, inning-ending double play.

Gonzalez has been excellent defensively at first base for Boston with a .997 fielding percentage, second among all first basemen in the majors this season.

–Jarrod Saltalamacchia came up with a huge two-run home run in the bottom of the fourth to tie the score at three and spark Boston’s high-scoring inning. The catcher also picked up his first-career stolen base later in the fourth.

–Outfielder Josh Reddick set a career-high with four hits. The rookie had been struggling of late, hitting just .136 with no home runs and one RBI in ten games before Saturday’s win. Reddick was hit in the left hand by a pitch in the eighth inning but stayed in the game.

WHAT WENT WRONG FOR THE RED SOX

–Bedard struggled early, allowing three runs through the first three innings. Control was a bit of a problem for the left-hander, as he handed out three walks through those first three innings. But he settled down after Boston’s big fourth inning and secured the win.

–Kevin Youkilis struggled in his second game back from a stint on the disabled list with a sore back. Youkilis was 0-5 on Saturday after going 0-3 Friday night.

–Dan Wheeler was shaky in relief, giving up three runs in 1.2 innings. Wheeler had been lights out prior to Saturday, surrendering just one run in his previous 9.2 innings pitched.

–Lowrie’s injury that caused him to leave the game is in the same shoulder (left) that caused the shortstop to miss 45 games between June and August earlier this year.