[Jim Porter]

I didn't see the report. However, 9.02(c) does not at all cover exactly what constitutes a checked swing. The only judgment to be made is whether or not the batter attempted to strike at the ball, which can be different from umpire to umpire. It doesn't talk about broken wrists, or breaking the plane of the plate, or any other easily recognized trigger for calling a checked swing a strike. Perhaps that's what they were talking about? Perhaps one of the regulars here with access to the ML Umpire's Manual could tell us if there is any guidance there.