Buehrle was hit hard in his second straight start vs. Boston, and the veteran lost his fourth straight game. The left-hander allowed six runs on seven hits in five innings, including three home runs. He walked none, struck out one and threw 84 pitches.
"I felt good, I felt like stuff was working. Just when I made a mistake, they made me pay for it," Buehrle said. "In key moments, it was either make a good pitch and they hit it or make a mistake and then pay for it. It's frustrating that we come out and score a bunch of runs today, which we've been struggling to do, and I can't keep a lead."
Morrison ignited the Marlins' dormant offense with a two-run home run in the first inning. He turned on a 3-1 pitch and sent it over the Boston bullpen in right for his sixth homer of the year.
"I was looking for a fastball middle, he threw a fastball middle and I was able to hit it and make good contact and it went out," Morrison said.
But the Red Sox responded in their half of the frame as David Ortiz belted a two-run homer of his own. Boston took a 4-2 lead with another two-run shot in the second inning, this time from Kelly Shoppach.
"The offense has been struggling and we come out and get two runs in the first inning and I go out there and give it right back up," Buehrle said. "The biggest thing for a starting pitcher, especially when you get runs scored while you're struggling or not, you try to put up a zero after we score. I was frustrated about that and only going five innings. I want to go deep into games, as deep as I can, but if you keep on getting hit around and giving up runs, it's going to get you out of the game pretty early."
Morrison drove in another run in the third with a double off the Green Monster. He knotted the game at 5 with a two-run double to center in the fifth. The Marlins had a chance to extend the inning, but Morrison was thrown out at home one batter later to end the threat.
"It could have been a different game there, down by one instead of down by two in the ninth," Morrison said.
Again, the Sox battled back and took the lead on a sacrifice fly from Adrian Gonzalez that scored Mike Aviles, who doubled to lead off the frame.
Former Marlins outfielder Cody Ross gave the Red Sox a boost in his first game since being activated from the disabled list with a solo homer over the Monster in the fourth that gave Boston a 5-3 advantage.
The Marlins threatened once more in the seventh, after Jose Reyes reached third on an error by center fielder Ryan Kalish to start the inning. But Hanley Ramirez, Giancarlo Stanton and Morrison couldn't bring Reyes home.
"We got a few people on base and couldn't get them in, and at the end of the game, that hurt," said Miami manager Ozzie Guillen. "I got my best three hitters coming up and we just couldn't get it done."
Morrison's first visit to Fenway Park was a memorable one on an individual level. He finished 3-for-4 and set a new Marlins record for RBIs by a designated hitter. The previous record belonged to Miguel Cabrera, who drove in four vs. the Royals on June 16, 2007.
"I'm not happy that we lost; obviously the team comes first and we've got to start winning games," Morrison said.
After entering his last outing vs. the Sox with a 10-game win streak in Interleague starts, Buehrle has now dropped his last two. He is 0-4 in June with a 5.48 ERA.
Red Sox starter Clay Buchholz went six innings, allowing five runs on nine hits while striking out three. It wasn't a dominating performance, but he did enough to win his fourth straight game.
"Well, you know, it's interesting that Clay didn't have his great stuff tonight and the offense seemed to sense it, and they were going to do what they had to do to get us enough runs," said Red Sox manager Bobby Valentine.
Stanton ended an 0-for-14 slump with a single in the fifth. He finished the night 1-for-3 with a run scored.
At 33-34, the Marlins are under .500 for the first time since May 5, when they were 13-14.
"The only positive thing is we have a couple of guys who swung the bat good, we scored a few runs and Morrison hopefully stays swinging the bat well," Guillen said.