The Mets downfall began before their second series loss to the Phillies. According to MLB.com writer Marty Noble, "the 'pen fell apart" after Jorge Sosa was converted from a starter to a reliever. That occurred on July 31. Noble wrote that "Relievers began to complain — privately — about how they were used."
It was obvious from the pen's performance that they were being misused. And neither Randolph nor Peterson seemed willing — or able — to address the pitchers' complaints.
It all boils down to poor communication, something that Peterson's been accused of in the past.
Billy Wagner summed it up with this quote published in New York Magazine: "Our pitching coach has no experience talking to a bullpen. He can help you mechanically, but he can't tell you emotions. He has no idea what it feels like. And neither does Willie. They're not a lot of help, put it that way."
With Randolph returning and Peterson likely to return, don't expect the situation to improve in 2008.