Spivey's steal attempt was the 26th successful try this season against Piazza, who has only caught five runners in action.
"It doesn't matter what I think," Piazza told reporters. "I did what I could do."
Tom Glavine struggled once again, allowing four runs and 11 hits over six innings in a no-decision. Even though many of the hits were soft bloops and bleeders, Glavine has not won since April 22 against the Nationals.
The Mets fell to 17-15.
"I'd just like to know whose fault it will be when he doesn't get it done this season," McClendon told the newspaper. "You know it won't be his fault. ... Doesn't the onus have to be on the player once in a while? When you're on that mound, it's just you out there. You had better have some (nerve). (Benson) had great stuff for us, but he didn't have the heart of a lion. They'll find that out in New York."
Benson told the New York Post in spring training that he was leaning more from the Mets' coaching staff, a comment which McClendon appears to have taken the wrong way.
"You just don't make those comments 10 months afterward and not think it when I was there," Benson told reporters.