Tarik Skubal won his fifth straight decision and Riley Greene homered as the Detroit Tigers beat the host Kansas City Royals 4-2 on Wednesday evening, completing a three-game sweep.In the wild-card chase, Detroit (80-73) closed the gap to two games behind Kansas City (82-71) and a half game behind the Minnesota Twins (80-72) for the third and final wild-card spot. Minnesota lost to the Cleveland Guardians in 10 innings.After allowing three hits and a run in the first inning, Skubal held the Royals hitless over his final four innings, permitting just one runner past first base.Skubal (17-4) completed five innings with one walk and seven strikeouts. His 221 strikeouts lead the majors, and he leads the American League in wins and ERA, at 2.48.Yuli Gurriel’s sharp two-out single put the Royals ahead 1-0 in the first.Kansas City gifted the tying run in the second with a walk to Zach McKinstry, who advanced on a wild pitch and scored on Jake Rogers’ infield hit plus pitcher Alec Marsh’s throwing error.Greene blasted a 427-foot homer over the right field bullpen to open a three-run third inning. His 24 home runs lead the Tigers, and he has four homers and 11 RBIs in his last 10 games.Trey Sweeney added a two-run double for a 4-1 lead to chase Marsh (8-9), who allowed four runs — three earned — on five hits and three walks with five strikeouts in 2 2/3 innings.