User blog comment:Xilinoc/Ch. 552 - The Fundamental Virulence/@comment-2211792-20131008172426/@comment-11051098-20131008212954

The way I see it, it's unlikely that Mayuri fought and defeated Askin. It's been too little time, and we haven't seen any proof of that. I think he did what he attempted to and left to find someone else to fight.

But maybe he will return to evaluate Kisuke as a possible opponent.