Taijuan Walker held the powerful Orioles to just four hits over 6 1/3 innings, Seth Smith hit a two-run home run and the Seattle Mariners beat Baltimore 5-3 on Thursday night.
Walker (4-6) gave up a solo home run to Hyun Soo Kim in the seventh, but otherwise did not allow a runner past first base. He struck out five and walked no one.
With Kim’s homer, the Orioles set the major league record for most home runs in June with 56. The 1996 Oakland A’s had held the record of 55.
Chris Tillman (10-2) took the loss, ending his nine-game winning streak. He pitched 4 2/3 innings, his second shortest outing in 17 starts this season, and gave up four runs on six hits, walking three and striking out three.
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Steve Cishek got four outs for his 19th save.