One day later, Yankees manager Joe Girardi said that he would discuss the difficulty between his starting pitcher and catcher in an attempt to figure out why Chamberlain and Posada weren't clicking in the hurler's abbreviated four-inning, 100-pitch effort.
"It seems at times they were not [in sync]," Girardi said. "It seems Joba was out of sync as well a little bit. It always seems when you're throwing strikes, the pitcher is working faster.
"Sometimes, you can overthink it a little bit. Sometimes, you can try to think about your mechanics a little bit. But it did seem that at times they had some difficulty, and that will be discussed."
Chamberlain allowed only one hit in the start, taking a no-decision in the Yankees' thrilling 9-8 walk-off victory over the Mets. Posada said he saw Chamberlain laboring in the third inning, as the 23-year-old's pitch count clicked up to 74 while the Mets scored twice without the benefit of a hit.
"I was just trying to get him to speed up his game a little bit," Posada said. "When he doesn't really think about it, he goes out there and his tempo is a lot faster. You have to keep him going. As soon as it seemed like we weren't on the same page with guys on base, I went out there and tried to tell him to stay with the plan and keep attacking the hitters."
Posada said that Chamberlain had some trouble with the signs when runners were on second base, and also crossed up the catcher on one pitch, a foul ball. But Chamberlain said that he needs to be more aggressive with his fastball, and he shook off several of Posada's signs.
"If I see a pitch that I'm not going to throw with conviction, then I'm not doing my team any favors," Chamberlain said. "I'm just throwing a pitch in there to throw it. That's being selfish, it's not going to be with conviction and it's not going to be what I want to do."
Both Chamberlain and Posada said that they do not have any issues that need to be handled, and Posada said he had no issue with disagreement.
"He's got the ball," Posada said. "He's got to make the pitches. I just make the suggestions and try to get him through. He's got to be the one to pitch."
Posada laughed when a reporter brought up his past troubles with former Yankee Orlando "El Duque" Hernandez, saying that Friday night's experience with Chamberlain was nothing like that.
Chamberlain said that he still gets a kick out of watching Posada butt heads with veteran Yankees like Andy Pettitte and Mariano Rivera.
"We've been great all year. Everyone has those days," Chamberlain said. "Even him and Mo still have it once in a while, and they've been doing it for 100 years.
"I think that's what makes your relationship better. When you're going good, you're going good, but when you have a bump, you have to figure out what each other wants."
Bryan Hoch is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.