White Sox 4, Red Sox 1: Gavin Floyd carried a no-hitter into the seventh inning and Adam Dunn homered as host Chicago avoided a four-game sweep and halted Boston's six-game winning streak.

Floyd (2-3) retired the first 14 hitters he faced and held the Red Sox hitless until Dustin Pedroia came up with a one-out single in the seventh. He finished with a season-high nine strikeouts in 6 2/3 innings, giving up three hits and walking one. Matt Thornton worked the final 1 1/3 innings for the save.

Chicago got all of the offense it needed in the first inning when Dunn followed up an RBI single by Alex Rios by crushing a two-run homer to right off Josh Beckett (2-3). Dayan Viciedo added an insurance run with an RBI base hit in the eighth.

Cody Ross, who broke up Floyd’s perfect game with a fifth-inning walk, got the Red Sox on the board with a two-out RBI single in the seventh inning.

Beckett pitched 6 2/3 innings, departing after he walked Brent Lillibridge to load the bases with two out in the seventh. He allowed three runs on six hits with eight strikeouts and two walks.

GAME NOTEBOOK: Dunn’s home run was his first at home since Aug. 4, 2011. ... Before Sunday’s loss, Boston had reached the .500 mark (10-10) for the first time this season. ... Beckett threw 126 pitches, matching a career high. ... The Red Sox brought three pinch hitters to the plate in the eighth inning - Lars Anderson, Jarrod Saltalamacchia and Darnell McDonald.