Rapid Reaction: Orioles 6, Red Sox 5

BALTIMORE -- The Boston Red Sox played extra innings for the third time in seven games and went 13 for the second time in three games Tuesday night.

Despite 10⅔ innings of scoreless relief by their bullpen, the Sox fell 6-5 to the Baltimore Orioles, who won on Chris Davis's RBI single.

Jonathan Aro, the eighth Sox pitcher of the night and who had not pitched since Sept. 3 in Pawtucket, pitched two scoreless innings before he walked Gerardo Parra to open the 13th inning. Manny Machado followed by lining a single to center, where Mookie Betts appeared surprised to see Parra streaking to third.

Interim manager Torey Lovullo summoned his ninth pitcher, left-hander Robbie Ross Jr., to face Orioles slugger Davis. On a 2-and-1 pitch, Davis lined a ball just out of the reach of a leaping Dustin Pedroia for the game-winning hit.

Kelly's streak ends: Sox pitcher Joe Kelly's eight-game winning streak came to an end when the 26-year-old right-hander left the mound in the third inning with what the club called tightness and fatigue in his right shoulder.

Kelly was lifted after he gave up five hits in the span of six batters, including a two-run home run to Steve Pearce. After the fifth hit, a single by Adam Jones, Lovullo came to the mound with assistant trainer Brad Pearson. After a brief discussion, Kelly walked off the mound with the trainer.

Kelly threw just 53 pitches before leaving. He gave up four runs (three earned) on five hits in 2⅓ innings, walking one and striking out four.

Kelly struck out all three batters he faced in the second inning, but all five Orioles hits in the third were line drives.

Kelly, who had been demoted to the minors earlier this season, was tied with Jake Arrieta of the Cubs for the longest winning streak of the season. He had allowed two or fewer runs in his past seven starts.

Shaw's market: Travis Shaw tied the score in the eighth with his 11th home run of the season, off Orioles left-hander Brian Matusz. Six of his home runs have come off lefties. The Sox scored four runs in the first five innings off Orioles starter Ubaldo Jimenez.

JBJ cools off: Jackie Bradley Jr. went 0-for-5 with three strikeouts. He is hitless in his past 13 at-bats; since his 4-for-4, four-RBI game against Toronto on Sept. 7, he is 1-for-24 with 13 strikeouts.

Hat trick for Pedroia: Dustin Pedroia had a double and two singles, his first three-hit game since June 21.

Still a good Betts: One night after his hitting streak ended at 18 games, Mookie Betts singled and scored twice.

Great penmanship: After Kelly came out with one out in the third, seven Sox relievers held the Orioles to a run on two hits through the 12th inning. Manny Machado hit his 29th home run, off Craig Breslow, in the fifth for the only Orioles' run in that span. Baltimore's only other hit was an infield hit by Jonathan Schoop off Alexi Ogando in the ninth, a one-hop bullet speared by shortstop Xander Bogaerts with a terrific stop, but his bounced throw took an odd hop that eluded Shaw.