UFC welterweight George Sullivan was supposed to fight Hector Urbina in the early prelims on Saturday .
That was before welterweight was unexpectedly pulled from the fight card for a potential conflict with the promotion 's anti-doping policy .
UFC welterweight George Sullivan was supposed to fight Hector Urbina in the early prelims on Saturday , but that was before he was unexpectedly pulled from the fight card for a potential conflict with the promotion 's anti-doping policy .