Danny Duffy allowed one run in 7 2/3 innings and the Kansas City Royals hit four homers in a 6-1 victory over the Detroit Tigers on Tuesday night.

Raul Mondesi, Alex Gordon and Eric Hosmer all homered off Justin Verlander (12-7), while Kendrys Morales went deep off Mark Lowe.

Jarrod Saltalamacchia homered for Detroit’s only run. The Tigers have lost seven of nine.

Duffy (10-1) allowed three hits and two walks, striking out five.

Verlander gave up five runs — three earned — four hits and a walk in seven-plus innings. He struck out six.