With two outs and a runner on first base, Noah Syndergaard was looking to close out the seventh inning and maintain the Mets' 3-2 lead.
But manager Mickey Callaway had different plans.
Instead of allowing Syndergaard, who battled his way through 6.2 solid innings, to finish the deal, Callaway elected to turn things over to Seth Lugo.
After an Evan Longoria single, Lugo then allowed a Stephen Vogt double, tying the game at 3-3 and taking a potential win away from Syndergaard.
The Mets' bullpen would eventually allow the floodgates to open in the 10th inning, and the Giants came away with a 9-3 victory.
After the game, Callaway admitted the move to pull Syndergaard after 103 pitches was a mistake.
"Of course hindsight's 20/20. That's one I'd like to have back," said Callaway. "Maybe let him face one more hitter. You can't do that, you have to deal with the moment, but that's one I'd like to have back.
"We were worried about the runner at first being able to steal. Lugo gives us a better chance to hold him there. I thought the matchup was about the same. Maybe Lugo was a little bit better in the long run because he can elevate the fastball. The history kind of tells us that Longoria is a low-ball hitter and has had a little bit of success off of Noah coming in, but looking back on it, I'd like to have that one back."
Syndergaard was visibly frustrated when Callaway came out of the dugout, but he took a more stoic approach after the game, even commending Callaway for pulling the team together and taking full responsibility for the move after the game.
"As a whole, after the game as a team, Mickey kind of pulled us all together and was kind of remorseful of that decision, but everything's a learning experience," said Syndergaard. "We have to learn from it. We have a lot of ballgames left, 100 games or something like that, and at the worst we're like 5.5 out, so there's a lot to be played. We'll get back at it tomorrow.
"We're all humans. We're all eligible to make mistakes. I think the most important part is to learn from it and move on. I think a man that's knowledgeable about the mistakes he makes is something that sparks more respect in our eyes, so I commend him for that."