Let's see. Men on 1st and 2nd, one out.
Sano smokes a line drive to right center. Grossman appears to misjudge the ball's velocity, and kinda drifts back and then vainly stabs for the ball which barely ticks the top of his glove and rolls to the wall.
Larnach, the runner on 2nd, was holding to see what happened and somewhat inexplicable did not try to score, retreating to 3rd. Ushela did not see this and also went to 3rd. Sano advance to 2nd on the throw towards the plate (way up the 1st base line on a wierd relay throw).
So now the Catcher has the ball, and he sees Larnach camped on 3rd and Ushela heading there too. He hesitates, double pumps, and then instead of throwing the ball the 2nd where Ushela was retreating , he lightly tosses the ball over the 3rd baseman's head into short left. Meanwhile, Sano recognized that Ushela was retreating to 2nd and starts wandering back towards 1st.
Larnach scores easily from 3rd on the overthrow, and Ushela also chugs around and scores with a belly flop. Ball cutoff by the 3rd basemen who apparently does not know the score and tried to tag Sano, who by now was making his way to 3rd base, but the game was already over.
You really should watch the replay, but that is the best I can do.