BALTIMORE (AP) — Gunnar Henderson hit his major league-leading 15th home run, Ryan O’Hearn also went deep and Corbin Burnes notched 11 strikeouts to help the Baltimore Orioles beat the Seattle Mariners 6-3 Sunday.

Henderson’s fifth leadoff homer of the season was the first of nine hits against George Kirby (4-4) in the deciding matchup of the three-game series. Henderson homered in each game while going 5 for 12 with two walks and five RBIs.

“That’s 15 homers in less than two months from a guy that’s in his second full year in the big leagues. It’s pretty amazing,” Baltimore manager Brandon Hyde said. “He’s one of the best players in this game right now.”

Burnes (4-2) allowed one run and seven hits in six innings to earn his first win in five starts since April 20. The 11 strikeouts matched his season high, set on opening day against the Angels.