Edit: Market will be extended until the fight happens or is cancelled. If it is cancelled, resolves to Neither.

Apparently this fight is really happening, and will be streamed on Netflix. It's unclear to what extent it's a serious fight or an exhibition match. One thing that would differentiate the two is a serious chance of either fighter get KO-ed/TKO-ed. From Wikipedia:

A knockout (abbreviated to KO or K.O.) is a fight-ending, winning criterion in several full-contact combat sports, such as boxing, kickboxing, muay thai, mixed martial arts, karate, some forms of taekwondo and other sports involving striking, as well as fighting-based video games. A full knockout is considered any legal strike or combination thereof that renders an opponent unable to continue fighting.

A technical knockout (TKO or T.K.O.), stoppage, or referee stopped contest (RSC) is declared when the referee decides during a round that a fighter cannot safely continue the match for any reason. Certain sanctioning bodies also allow the official attending physician at ringside to stop the fight as well.

I don't know a ton about boxing, so these rules may be updated for accuracy to match the spirit of the market. Let me know if you have any suggestions.