BOSTON -- After starting the season 1-5, the Boston Red Sox slugged their way to finishing the first month of the season with a .500 record.

David Ortiz hit a pair of solo home runs and Darnell McDonald and Mike Aviles also homered as the Red Sox held off the Oakland Athletics 11-6 on Monday night.

"It was a good win -- seeing the guys all contribute, running around the bases feeling good at home," manager Bobby Valentine. "It's a good way to start a homestand."

Clay Buchholz (3-1) pitched six solid innings before a minor collapse in the seventh allowed Oakland to get back into it. Boston's beleaguered bullpen was able to get out of two bases-loaded jams and preserve the win for Buchholz.

"The bullpen is going to be fine," said Ortiz, who hit his fifth and sixth homers of the season. "They're facing situations like they've faced before, sometimes it's going to work out the way they want it. Sometimes it's going to get a little tougher. They're doing a good job."

The way Ortiz has been hitting makes it a lot easier on Boston's relievers. Ortiz increased his average to .405 this season and hit multiple home runs for the 36th time with the Red Sox, one fewer than Ted Williams' club record of 37.

"David's the star of stars right now," Valentine said. "It's hard to throw a strike by him."

The Red Sox won for the seventh time in eight games and finished the opening month at 11-11 despite starting the season 0-3 and losing five of their first six. Boston also snapped a five-game home losing streak and scored 10 or more runs for the seventh time this season.

Josh Reddick hit a three-run homer for Oakland, which lost its third straight. The A's made the trip to Boston after blowing a 2-0 lead in the bottom of the ninth Sunday in a 5-2 loss at Texas.

"We're a big league team. The day before shouldn't have an effect on you, certainly not this early in the season," A's manager Bob Melvin said.

The Red Sox scored four runs in the second, two in the third and then five in the fifth while chasing Oakland starter Tommy Milone (3-2) after 4 2/3 innings.

It appeared to be more than enough offense as Buchholz was cruising with an 11-1 lead before getting tagged for five runs in the seventh. Coco Crisp hit a bases-loaded single with two outs, driving in the first runs Buchholz allowed since the first inning. Reddick, playing his first game in Boston since the Red Sox traded him in the offseason, followed with a homer to cut Boston's lead to 11-6. Buchholz pitched 6 2/3 innings, allowing six runs on seven hits while striking out five and walking five.

Reliever Junichi Tazawa allowed a single, then hit a batter before an error by third baseman Nick Punto on a popup loaded the bases. Vicente Padilla replaced Tazawa and got a mock cheer when he threw a strike after falling behind 2-0 against Daric Barton. Padilla came up with two more strikes to get Barton looking and finally end the A's rally.

Oakland loaded the bases again in the eighth with nobody out, but failed to score a run. Crisp struck out, then Reddick grounded to second for a double play. The A's left 10 runners on base.

"We had the bases loaded right there. One base hit, it's a whole different game," Melvin said. "We're one hit away from making it less than a grand slam."

Brandon Inge, released by Detroit last week and signed by Oakland earlier Monday, went 1-for-3 with a walk in his debut for the A's.

Ortiz hit a line drive into the Oakland bullpen for a solo homer in the second, then drove another one out with a towering fly in the fifth to put Boston up 7-1.

Reddick, a former Boston outfielder, backed up to the wall and got his glove on it, but couldn't hang on and both the ball and Reddick ended up on the wrong side of the wall as Ortiz rounded the bases for his sixth homer of the season.