Huh. I never really considered the idea that there might be subs for the refs, too. #USAvsPAR .
A fifth official, or the fourth taking over the duties of one of the other three? ‎- Eivind
Apparently it would've been the fourth taking the place of the center ref if he'd needed to come out. ‎- Mr. Noodle
Yeah, that's what I've seen before :) ‎- Eivind