Summer ends tomorrow, but the Yanks kick off what should be an exciting fall season tonight in Kansas City with their division in hand and league-leading Detroit in their crosshairs. Alex Rodriguez, erstwhile k-machine and boo magnet, is hotter than an afternoon in Falluja, and only slightly less dangerous. Presumptive-MVP Derek Jeter is continuing his assault on the batting title lead and its temporary custodian, Joe Mauer. On the mound, Chien-Ming Wang is defying those who claim he has pitched beyond his limit. Lesson of the day for the Royals and the rest of MLB: tangle with a predator at your peril.