He reached because Martin's throw bounced. He has to go catch the bounce.
It was a terrible play by Martin. The ball was hit crisply and if he just comes up throwing, as he's supposed to do, and makes any kind of reasonable throw, he gets the runner fairly easily.
Make the plays.
Get the out on the grounded to short that Castro can't convert. Catch the friggin' popped up bunt.
And with the infield in, convert the absolute perfect one upper to second into an out.
But the Twins operate under the theory none of that matters. Nobody has a position, outside catcher. Anybody can play anywhere.
Sometimes, you get what you plan for.