Alexander Volkov could make a major jump up the heavyweight ranks this weekend at UFC Fight Night 127.

Volkov (29-6 MMA, 3-0 UFC) looks for his sixth straight win since concluding his Bellator run in 2015. Standing across from him in Saturday’s UFC Fight Pass-streamed headliner in London is former UFC heavyweight champion Fabricio Werdum (23-7-1 MMA, 11-4 UFC),

Werdum is No. 4 in the USA TODAY Sports/MMAjunkie MMA heavyweight rankings, so if No. 14-ranked Volkov can pull off the upset, he’s likely to jump well into the top 10.

Ahead of UFC Fight Night 127, check out the latest set of rankings above.