Anderson Silva Comes to the Rescue Again ... For Fight After-Party!!

Vegas partygoers, rejoice! 'Cause just hours after replacing Jon Jones at UFC 200, Anderson Silva has also agreed to take over Jones' post-fight party-hosting duties.

As TMZ Sports previously reported, Jones was set to host a party at 1 OAK following his fight with Cormier ... but the plug was pulled when he was taken off the card. That left the club's owners scrambling to recoup a TON of MONEY lost in promotional material ... and to find a new host.

But all hope of turning up isn't lost ... 'cause our Vegas sources tell us 1 OAK secured Silva at the last minute and are pumped.

Jones' ads have been completely scrubbed ... and the club raced to put together material featuring Silva.

#TurnUp