“The Spider” is back.

Less than a week after the UFC announced that former title challenger Nick Diaz had ended his retirement, the former Strikeforce champion has an opponent. Facing off with Diaz will be former middleweight kingpin Anderson Silva. The pair will headline the promotion’s Jan. 31 pay-per-view event in Las Vegas, expected to be UFC 183. The news was announced by UFC President Dana White.

Silva will step into the Octagon following back-to-back losses to current champion Chris Weidman. Weidman upset Silva at UFC 162 with a stunning knockout and Silva suffered a gruesome broken leg in their rematch at UFC 168 last December. Now fully recovered, Silva will square off with Diaz in a five-round main event.

The 30-year-old Diaz has been out of action since dropping a unanimous decision to then-champion Georges St-Pierre at UFC 158 in March of 2013. It marked Diaz’s second straight loss on the scorecards, having fallen short against Carlos Condit at UFC 143 for the promotion’s interim welterweight title.

Prior to the back-to-back title losses, Diaz had reeled off 11 straight wins under the Dream, Strikeforce and EliteXC banners. The Stockton, Calif., native bested former two-division champion B.J. Penn in his UFC return in late 2011. Following the loss to St-Pierre, Diaz announced his retirement from MMA, but will return for his crack at the former champion Silva.

UFC 183 will take place Saturday, Jan. 31 in Las Vegas. No venue has been announced for the event. The event will air live on pay-per-view. More bouts for the card are expected to be revealed in the coming months.