Ryan McKenna entered the game as a defensive replacement in a routine ninth-inning substitution.
Then plans quickly changed — and it turned out the Baltimore Orioles would need his bat.
McKenna hit a two-run homer in the bottom of the 10th to give the Orioles a 6-4 victory over the Seattle Mariners on Saturday.
When McKenna replaced Anthony Santander in right field, Baltimore was trying to protect a one-run lead, but he could only watch as Mike Ford's tying homer off closer Félix Bautista sailed past.
So the game went to extra innings.