FORT MYERS, Fla. -- Brian Flynn, who has an outside shot at winning a spot in the Marlins' rotation, turned in a strong performance, giving up one hit and no runs over three innings during a 5-4 win over the Red Sox on Tuesday afternoon at JetBlue Park.
"I got used to the umpire and the whole spectrum of the backstop and the fans," Flynn said of his debut this spring. "Having the world champions in the box, essentially, helped the whole process overall. I was able to focus on each individual pitch regardless of the situation. I was happy overall with the outing."
Kyle Jensen drilled a go-ahead, two-run homer over the Green Monster for the Marlins in the top of the ninth against Red Sox lefty Drake Britton.
Red Sox starter John Lackey fired 2 2/3 innings in his first action since Game 6 of last year's World Series. The right-hander, slotted in as the team's No. 2 starter, got what he needed from the outing. Lackey gave up four hits and walked none while striking out two.
"I felt all right. That was a good place to start," said Lackey. "I pretty much threw all fastballs the first two innings, tried to work on a few things in that third inning. I got a little bit tired and will probably be a little sore tomorrow. It's just a little step up in intensity, but a good place to start."
Mike Carp came off the bench and belted a solo home run for the Red Sox. Catching prospect Christian Vazquez continued his strong spring by drilling an RBI single to right.
Up next: Henderson Alvarez will make his second Grapefruit League start at 1:05 p.m. ET on Wednesday when the Marlins take on the Braves at Roger Dean Stadium in Jupiter, Fla.
Ian Browne is a reporter for MLB.com. Read his blog, Brownie Points, and follow him on Twitter @IanMBrowne. This story was not subject to the approval of Major League Baseball or its clubs.