(AP) -- Felix Hernandez allowed one run and two hits over two innings in his spring training debut and Stefen Romero homered twice and had seven RBIs and a Seattle Mariners split-squad pounded Kansas City 12-2 on Thursday, ending the Royals' 11-game winning streak.
Hernandez, who signed a seven-year $175 million deal last month, struck out two and threw 33 pitches.
Romero finished 4 for 5.
He had a grand slam in the fourth inning and a three-run shot in the ninth.
Casper Wells hit a three-run homer in the eighth.
The Mariners have 10 consecutive multi-homer games and top the majors with 29 home runs.
Hisashi Iwakuma allowed one hit in three scoreless innings for the victory.
Royals starter Ervin Santana struck out four in three innings and allowed a run and three hits.
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