KANSAS CITY, Mo. — Cal Raleigh hit a pair of homers to match the Seattle season record set by Ken Griffey Jr., Dominic Canzone belted a career-best three homers of his own, and the AL West-leading Mariners routed the fading Kansas City Royals 12-5 on Tuesday night for their 10th consecutive win.

Raleigh’s first homer, a 419-foot shot off Michael Wacha while batting left-handed, gave him 55 on the season, breaking the record for a switch-hitter set by Yankees great Mickey Mantle in 1961. Raleigh’s second shot, a 425-footer off Daniel Lynch IV as he batted right-handed, tied the club mark that Griffey set during the 1997 season and matched the following year.

It was the 10th multihomer game this season for “The Big Dumper” and the 20th of Raleigh’s career. The All-Star catcher also doubled

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