Donald Cerrone will now face Alex Oliveira this February 21 in the main event of UFC Fight Night 83, officials announced on Thursday.

Cerrone’s original opponent, Tim Means, was removed from the card after a potential anti-doping violation came back during a test given by the United States Anti-Doping Agency.

The two will headline the FOX Sports 1 event from the Consol Energy Center in Pittsburgh.

Cerrone (28-7) had his eight-fight win streak snapped in December with a first round loss to Rafael dos Anjos for the lightweight title. This marks his first Octagon appearance as a welterweight.

Interestingly enough, Oliveira (14-2-1) also sports the “Cowboy” nickname just like Cerrone. His was given to him while riding bulls.

Since signing with the UFC last year, Oliveira has gone 3-1, including three consecutive victories. He knocked out Piotr Hallmann last November.

Check out the current list of fights planned below:

Welterweight: Donald Cerrone vs. Alex Oliveira

Bantamweight: Cody Garbrandt vs. John Lineker

Female Bantamweight: Sarah Moras vs. Lauren Murphy

Middleweight: Derek Brunson vs. Roan Carneiro

Middleweight: Joe Riggs vs. Chris Camozzi

Middleweight: Trevor Smith vs. Leonardo Augusto Guimaraes

Lightweight: Shane Campbell vs. James Krause

Welterweight: Brandon Thatch vs. Siyar Bahadurzada

Heavyweight: Anthony Hamilton vs. Shamil Abdurakhimov

Welterweight: Sean Strickland vs. Alex Garcia

Welterweight: Nathan Coy vs. Jonavin Webb

Middleweight: Daniel Sarafian vs. Oluwale Bamgbose

Featherweight: Dennis Bermudez vs. Tatsuya Kawajiri

Female Bantamweight: Ashlee Evans-Smith vs. Marion Reneau