Kansas City, Mo. ? Ryan Shealy is auditioning for a job next year to be the Kansas City Royals’ first baseman. So far, the tryout has gone very well.

Shealy, John Buck and David DeJesus homered and Kansas City beat the Seattle Mariners 6-3 Tuesday night to extend its winning streak to five games.

Shealy’s home run was his fifth in nine games since a Sept. 2 promotion from Triple-A Omaha. His shot with Mike Aviles aboard chased Brandon Morrow in the fifth.

“He’s done a great job of seizing an opportunity that he’s been given,” Royals manager Trey Hillman said. “I don’t think there is a guy in the clubhouse that’s not pulling for him. To do what he’s done since the call-up, hit five balls out of the ballpark and take it out to center today, that’s pretty impressive.”

The Mariners are 0-6 to start an 11-game, three-city trip and have lost 10 of 13.

Shealy and DeJesus homered in a four-run fifth. DeJesus led off the inning with his first home run in 178 at-bats since a decisive shot in the ninth off Morrow on July 12.

Buck, who hadn’t homered since July 29, led off the third with his ninth homer.