As Tom Aspinall focuses on fighting the best MMA fighter ever, his sparring partner, Mick Parkin, has earned himself a spot among the UFC’s top 15 heavyweights. He’ll face long-time contender Marcin Tybura in the toughest test of his career at UFC London on March 22.

Jon Jones made his highly anticipated return to the octagon in November, defeating Stipe Miocic via third-round TKO at UFC 309 to defend his heavyweight title for the first time.

Jones is widely regarded as the greatest fighter of all time after a nearly perfect career in MMA. The only mark on his record came when he suffered a controversial DQ defeat to Matt Hamill in 2009. Still, #13 ranked UFC heavyweight Mick Parkin expects him to fall short against Aspinall.

UFC president Dana White says Jon Jones is open to facing Tom Aspinall, setting up a potential heavyweight title clash.