For eight full innings, the Mets were happy to call Game 5 of the 2015 World Series a "Dark Knight." Unfortunately for New York, the rest of Game 5 paved the way for one of the darkest actual nights in franchise history.

The Kansas City Royals clinched their first World Series title in 30 years on the Mets' home turf Sunday night/Monday morning, winning the game 7-2 and the series, 4-1, thanks in part to a giant Mets blunder in between the eighth and ninth inning.

For the first eight full frames Sunday, New York starter Matt Harvey was absolutely unstoppable. But then he and the Mets got a little too cute. Mets manager Terry Collins gave in to the wishes of Harvey and thousands of New York fans in between the eighth and ninth with the Mets up, 2-0. As it turned out, Collins should have listened to his gut. Harvey was seen telling Collins “No way,” when he was told he would be yanked after the eighth inning. His begging worked and he came back out on the field for the ninth.

Harvey then walked Lorenzo Cain, Cain stole second, and Eric Hosmer drove Cain home with a double to deep left. That was enough for Collins to see as he quickly went to Jeurys Familia, but damage was already done. Hosmer would tie the game, 2-2, on some brilliant base running. He scored from third base when Salvador Perez’s broken bat dribbler got David Wright to throw to first to get the sure out. When Wright released the ball, Hosmer aggressively took off for home. Mets first baseman Lucas Duda threw a bad ball to the plate, sailing it by catcher Travis D’Arnaud, and Hosmer slid in safely as the Citi Field crowd sat stunned.

"When you looked in [Harvey's] eyes, when he came off in the eighth inning ... I just trusted him and I said, 'you got it,'" Collins said about the decision to leave Harvey in the game for the ninth.

In extra innings, the Royals' bats truly woke up. Christian Colon's RBI single off of Addison Reed in the top of the 12th inning opened the floodgates for Kansas City. The Royals would plate five runs in the inning as Alcides Escobar and Cain also collected RBIs.