■ SCORE: Marlins 8, Red Sox 7.
■ RECORD: 8-9.
■ BREAKDOWN: The Sox squandered a 7-1 lead when the Marlins took advantage of Rubby De La Rosa’s wildness in a five-run seventh and then Marlins outfield prospect Christian Yelich hit a two-run walkoff homer off Chris Carpenter. The Sox had amassed their lead on a two-run homer by Will Middlebrooks and solo shots by Jackie Bradley Jr. (to lead off the game) and Mike Carp. Jarrod Saltalamacchia knocked in two runs with a double. Jon Lester shut out the Marlins over his last four innings after allowing a first-inning run.
■ THUMBS UP: Bradley Jr. is now 14 for 27 after three more hits in the leadoff spot. He’s batting .519. Saltalamacchia is hitting .381 after going 1 for 3. Carp, who may make the team with David Ortiz unlikely to start the season, homered to the opposite field. Alex Wilson pitched a scoreless inning and Anthony Carter struck out three in 1⅓ innings.
■ THUMBS DOWN: De La Rosa made a splash early in camp, but he since has shown some warts. He walked four in the seventh. Manager John Farrell said, “He was overthrowing. Just didn’t have good command of his fastball.” Mauro Gomez went 0 for 4 and is now batting .167 and Jose Iglesias went 0 for 3 and is down to .214.
■ MEDICAL REPORT: Mike Napoli was hit on the left wrist with a pitch in the third inning but said he was OK after the game. Napoli made a strong diving defensive play at first base. Stephen Drew is still battling concussion-like symptoms, and Ortiz began Day 1 of a resting process to alleviate inflammation in his heels.
■ AROUND THE BASES: Farrell has been praising Bradley Jr. throughout camp, but he wanted to see how Bradley Jr. reacted to pitchers when they’ve had a chance to start throwing all of their pitches. Well, Bradley owned Kevin Slowey, hitting his first offering over the left field wall. Another player opening eyes is Mitch Maier, the former Royal who is thrusting himself into the outfield mix. He scored two runs.
■ NEXT GAME: The Red Sox face the Blue Jays at JetBlue Park at 1:35 p.m. Tuesday. Clay Buchholz opposes Justin Germano.