How many big fights ( main events on HBO, Showtime, or PPV ) will be canceled due to an injury, a positive drug test or a duck in 2017? It was a problem in 2016.
Wladimir is always good for an injury. If Errol Spence v Brook gets made I expect Spence to fail his drug test too.
If Matchroom win the purse bid, and they will. Brook generally requests it for his fights, and has no problem doing it himself. As someone whose worked in the filthy Mayweather gym, Spence fears VADA.