LOS ANGELES — MJ Melendez hit a grand slam to conclude a 12-pitch at-bat, Seth Lugo became the AL’s first 10-game winner and the Kansas City Royals beat the Los Angeles Dodgers 7-2 Saturday night as Yoshinobu Yamamoto’s start was cut short after two innings due to triceps tightness. I know the cutter is his go-to pitch and he doesn’t …