
It happened in the top of the eighth inning after Mariners batter Kendrys Morales hit the popup, and Encarnacion appeared to have a bead on it, but that pesky mound came out of nowhere. As a result, no one caught the ball and Morales ended up at second and was credited with a double.
Fortunately, the misplay by the Blue Jays infield misplay did not lead to any runs, and they had a 10-2 lead at the time, so no harm, no foul.
Video via MLB.