honestly, I don't know what his exact, protocol was the pre show day. But when this happens at or so close to a show, I think the likely cause has to do with dehydration, electrolytes, potassium. Possible worsened by diuretics.
Like I said all I can do is guess at this point.
first thing that comes to mind for me is the Diuretic situation. Hopefully for the sake of other bros, we can get the results back with this thread .
thanks for post bro