[gsf23]

So here is another question. Vermeil is challenging the runner stepping out of bounds before the fumble. The ref looks at the replay, sees that the runner is cleary in bounds, and then notices the second touch. Can he still reverse the call even though that was not what was being challenged?

Another exapmle would be if a ball is caught on the sidelines, ruled a catch on the field and spotted short of the first down marker. The team challenges the spot thinking that they should get a first down. During the review the ref notices that the receiver was passed the line to gain, but that he has one foot out of bounds when he makes the catch. Can they rule No-Catch even though that was not being challenged?