The Mets’ slavish devotion to market forces and their utter disregard of the wishes of their fans and their own sense of history this week results in the heartbreaking news that the club’s all-time No. 13, Edgardo Alfonzo, will suit up in some other team’s uniform in 2003. This is the saddest player personnel move in years for the Mets and represents the willful shedding of a homegrown player so rare as to be on pace to set all-time team marks in a half-dozen or more offensive categories and who still ranks among the best at his position in either league. It plain sucks, and we at MBTN can only hope the team manages enough dignity not to issue this number to the next fly-by-night piece of patchwork that stumbles into town on a salary swap.