Crazy example in the Giants game tonight how video review is not working. Cain picks off runner at first, but ump blows call. Bochy challenges and the video umps miss the clear tag. Challenge overruled so SF can't challenge again. AZ gets a player later sliding into the plate, Cain clearly tags him out, ump blows the call, and Bochy can't challenge.
There should be no limit on challenges where a run is in dispute.
MLB Fail
Replay challenge key in Giants' 5-4 loss
http://www.sfgate.com/giants/article...ss-5369058.php