Colton Cowser caught the final out of the Orioles’ 9-7 win over the Royals on Saturday night, then lined up at the edge of the left-field warning track and ceremoniously threw the ball backward behind his head.

“I just yeeted it behind me,” the 24-year-old outfielder said.

It was at that moment, he knew: He had made a big mistake.

The reason? It was the ball that sealed Baltimore closer Craig Kimbrel’s 422nd career big league save, which tied Billy Wagner for seventh on the AL/NL all-time list.