I think that was the stupidest thing I have ever seen in baseball...
Watching Yankees vs. Red Sox, fly ball caught as Oswaldo runs to second, turns off second back to first and Cora challenges saying he was "rounding" second and had to retouch second base...when he left second base back to first! The umpire overturned it saying Oswaldo intended to go to third, and was ruled out.
Between this and Tampa using two challenges on the same play earlier this week, Yankees are getting some pretty bad calls against them.