OAKLAND -- For the second night in a row, former Red Sox outfielders conspired to do in their former team.
Trailing by a run in the ninth, the A's got a game-tying pinch-hit single from Brandon Moss and a game-winning sacrifice fly from Coco Crisp to edge the Red Sox 3-2.
The other Oakland run came on a first-inning homer by Crisp. Oakland has scored nine runs in the two series and eight have been knocked in by former Red Sox players Crisp, Moss and Josh Reddick.
Alfredo Aceves blew his fourth save chance of the season.
The blown save wasted a fine start by Jon Lester, who went 6 23 innings, striking out nine, which matched his previous season high. He allowed a solo homer to Coco Crisp to open the first, then walked Jemile Weeks before retiring 14 of the next 15 hitters he faced. After the first inning, just two A's reached base against him.
Vicente Padilla took over with two outs and a runner on in the seventh and fanned Brandon Hicks. Padilla has stranded 18-of-19 inherited runners this season. Padilla then worked out of a bases-loaded, one-out jam in the eighth when he struck out Yoenis Cespedes and Johnny Gomes.
The Sox got a solo homer from Jarrod Saltalamacchia in the second to tie the game, then took the lead in the fourth when Oakland first baseman Chris Carter couldn't handle Saltalamacchia's smash, enabling David Ortiz (single) to score from third.
Boston has scored just 12 runs in the six games on the current trip. In five of the six, they've managed two runs or fewer. With runners in scoring position, the Sox are just 4-for-37 (.108) in those six games.
Pablo Sandoval hit his fourth home run of the spring and Rusney Castillo had three hits to lead a Red Sox split squad to a 7-5 victory over the Tampa Bay Rays on Saturday in Port Charlotte, Fla.
Sandoval, who has won back his third base job after missing nearly all of last season following surgery on his left shoulder, connected for a three-run shot, batting right-handed, against Rays starter Ian Snell in the fifth inning. The switch-hitting Sandoval had abandoned hitting right-handed in 2015, his last full season with the Red Sox.
He's hitting .353 this spring with a 1.051 OPS and 19 RBI.
Castillo, the Cuban outfielder signed to a seven-year, $72 million deal late in 2014 but again likely headed for Triple-A Pawtucket, went 3-for-4 and is hitting .368 this spring. Catcher Blake Swihart, also probably Pawtucket-bound, had two hits and is hitting .325.
Kyle Kendrick strengthened his bid for a spot in the rotation by allowing two runs in six innings and striking out six and Jackie Bradley homered as a Red Sox split squad played to a 3-3 tie with the Philadelphia Phillies on Saturday in Fort Myers, Fla.
Kendrick, 32, a non-roster invitee to spring training, allowed eight hits and a walk in his sixth start this spring. He's been the Red Sox best starter with an ERA of 2.17.
With David Price out until May and lefty Drew Pomeranz still a question mark, Kendrick could find his way into the rotation behind Chris Sale, Rick Porcello, Steven Wright and Eduardo Rodriguez.
Bradley went 2-for-3 with his third homer of the spring. He's hitting .244 in spring training games.
The Phillies pushed across the tying run in the ninth off lefty reliever Robby Scott, the first run he's allowed this spring in 10 innings.
The Minnesota Twins host the Red Sox on Sunday at 1:05 at Hammond Stadium in Fort Myers.