Paul Phoenix vs Ryo Sakazaki (as Mr. Karate)
Paul and Ryo have been fighting each other for more than 20 years.
All this began shortly after Ryo, along with Robert Garcia have successfully rescured Yuri and reunited with the siblings' father, Takuma Sakazaki.
Following a motorcycle race, which Ryo had lost, he and Paul fought with Ryo winning the first round, thanks to the Haohshokouken.
However, Paul wins the second round (shortly before the King of Iron Fist Tournament 2), the Special Phoenix Smash was the move which did Ryo in.
Cut to 20 years later...
Following the fifth Iron Fist Tournament, Paul is in Second Southtown. He spies the new Kyokugenryu School and enters.
Apparently, Ryo - now the new Mr. Karate - has challenged Paul to a match to see who is the better fighter once and for all. Paul is not one to back down so easily and accepts the match.