Catcher Jason Castro, signed to a three-year, $24.5 million in the offseason, provided two insurance runs with a single to left, and finished 2-for-3 with a walk in his Twins debut. Polanco capped the scoring with an RBI single to right. Royals lefty Matt Strahm was charged with four runs, while fellow lefty Travis Wood gave up two. Both recorded just one out.
It spoiled a strong outing by Royals lefty Danny Duffy, who threw six innings of one-run ball, scattering three hits and three walks with eight strikeouts in his first Opening Day start.