Elias roughed up in 4th inning, Mariners fall to Royals 8-2

Mike Moustakas hit a two-run homer and Omar Infante had a three-run double to highlight the Royals ' seven-run fourth.

Royals first baseman Eric Hosmer said his team, the defending American League champion, is putting these types of innings and games together more frequently.

Alcides Escobar opened the fourth with a single, and Moustakas followed with his shot just over the right-field wall, his seventh, on a 3-2 fastball.

Infante unloaded the bases with his double to left, then Jarrod Dyson and Alcides Escobar each followed with RBI doubles.

Royals Danny Duffy, in his first start since a rehab stint for biceps tendinitis, was one out away from being the pitcher of record in the fifth, but couldn't close it.

Ryan Madson (1-1), who worked 1 1/3 innings of hitless relief, was credited with the victory.

Royals: CF Lorenzo Cain slightly strained his hamstring running down Dustin Ackley's flyball in the seventh inning Tuesday.

Mariners: RHP Taijuan Walker (5-6, 4.94) doesn't have a winning record, but over his last five starts, he's 4-1 with a 2.04 ERA, has won three straight and gone eight innings in back-to-back starts.

In that game, he worked a season-high 7 1/3 innings with a season-high 10 strikeout but yielded three home runs.