When Willie Randolph and some of his henchmen were fired last month, all eyes were on Jerry Manuel. He's been analyzed, poked and prodded ad nauseam the last month, but what about new pitching coach Dan Warthen? Brought up from Triple A New Orleans (with Ken Oberkfell, Luis Aguayo and a 30-pound vat of jambalaya), he took over for Rick Peterson and couldn't be more different. Peterson is an eccentric philosopher, and once you listen to one of his Zen-like, metaphorical ramblings, you may think he's from another planet, or at least California. Warthen, on the other hand, is just a down-to-earth, old-fashioned baseball man. Warthen pitched parts of four seasons from 1975