Many fans were shocked and heavily disappointed when news broke late Tuesday that Anderson Silva was pulled from UFC 198, which is taking place in his hometown of Curitiba, Brazil this weekend.

UFC President Dana White spoke on The Kevin & Bean Show about “The Spider” getting sick just days before the event.

“So what’s crazy is, we have a show called UFC Embedded, and it’s on YouTube that you can go watch leading up to the fight. It shows you day-by-day, real-time what’s happening with all the fighters,” White said (transcribed by MMA Fighting). “We literally put one yesterday with Anderson that’s awesome. Him training and how pumped he is to be fighting in Curitiba, him hometown.

“Then late in the afternoon yesterday, we get the call he’s violently ill, he’s throwing up and everything else. So we send him to a hospital. Then they release him, they [sic] he gets home and he’s just so sick, we send him to another hospital. A totally different hospital. Ends up, this morning at 7:30, he went in for surgery. He had a problem with his gall bladder. I don’t know if they removed it or what they did, but he was in surgery for almost two hours. It’s crazy.”

While the UFC was hoping to find a replacement for Silva’s opponent, Uriah Hall, an agreement could not be made on the bout and Hall will no longer be fighting on the card.