KANSAS CITY, Mo. — New city, new time zone, same stinkin’ struggles for the Seattle Mariners. An endless road trip staggered on Friday night, another abysmal loss stacked on top of the one before it. Playing without injured r Julio Rodriguez, the Mariners managed just one run on offense and committed two errors on defense in a 5-1 defeat to the Kansas City Royals on a cold Friday night at Kauffman Stadium. The Baltimore Orioles (79-71), meanwhile, won their third straight game Friday night, shutting out Houston, 6-0, to pull within three games of the Mariners for the final playoff spot in the …