The American League West-leading Seattle Mariners seek their 10th consecutive victory when they visit the Kansas City Royals for the opener of their three-game series at 7:40 p.m. ET on Tuesday at Kauffman Stadium. Seattle (82-68), which owns a one-half game division lead over the Houston Astros (82-69), hasn't lost since dropping the opener of a three-game road set against the Atlanta Braves on Sept. 5. The Mariners won the final two contests at Atlanta before returning home to sweep the St. Louis Cardinals and Los Angeles Angels , the latter series being a four-gamer.

The Royals (75-75), who are 6 1/2 games out of a wild card spot in the AL, lost six of seven contests before routing the Philadelphia Phillies 10-3 on the road on Sunday. The slump severely damaged Kansas Cit

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