UFC 198's stacked main card has stayed intact for several weeks, much to the delight of expectant fans. That's no longer the case as of today, as Dana White confirmed to Yahoo's Kevin Iole that Anderson Silva is out of Saturday's bout against Uriah Hall. It is the first time in Silva's entire 20-fight UFC career that he has withdrawn from an officially announced matchup.
According to UFC medical consultant Jeff Davidson, Silva had "developed abdominal discomfort [Monday and] further evaluation today is consistent with acute cholecystitis. He will be seen by a surgeon today for possible surgery.