Sometimes I really do wonder if there is some under-the-table or gentlemen's agreement that coaches will only use the challenge in certain circumstance or certain times or whatever. Maybe to help the league save face, or some agreement that the challenge was enacted with the understanding that they won't use it every game or won't use it very often in ways that make the league or the officiating look bad. Otherwise, this will be one of the biggest mysteries surrounding Quin...why does not not use his challenges, especially considering how many close games we have lost with nary a challenge used. Hell sometimes even using it to challenge a call of possession could change the course of the game. But Quin uses them as if he had only so many to use in a season and if he burns through them all early in the season, he will run out. Could it be a management decision? I don't get his reluctance to make that call. Does he just not want to appear to be wrong or complaining or something? He famously doesn't get techs berating the refs to defend his team. Maybe he is just averse to feeling rejected or wrong or whatever enough that he does not make the call. I think it is a wasted opportunity, but who knows what is going on behind the scenes.