Two runs scored on Wade Davis' throwing error in the eighth inning as the Twins came back to beat the Royals 4-3 and complete the three-game sweep.
Davis entered the eighth in place of Aaron Crow (0-1), who had loaded the bases with one out and a 3-2 lead. Chris Herrmann chopped a ball back to the mound that Davis threw wide left of Salvador Perez in an attempt to get the forceout at home plate.
Jason Vargas held the Twins (6-6) scoreless the first six innings, then allowed a two-run home run to Y Pinto.
The Royals (4-7), who had mustered just one run in each of the first two meetings, tied it in the next frame thanks to RBI from Eric Hosmer and Norichika Aoki. Mike Moustakas scored the go-ahead run when Trevor Plouffe misplayed a bunt by Alcides Escobar.
Twins starter Kevin Correia struck out two batters and yielded seven hits and a walk over seven innings.