What fighters today would be able to last in the bare knuckle days?

[the mesiah]

Kirk,rios, arce (even though his last fight wouldn't prove correct), maidana, arreola-would be funny,Matthyse

[ThePunchingBag]

Floyd "Money" Mayweather Jr.

Check hooks all day.

[Grand Champ]

Todays fighters wouldn't need to go 21+ rounds in a bareknuckle fight. Boxing have evolved a great deal since then. While todays fighters are not as tough (for the most part) they more than make up for it with the right technique and conditioning.

Mayweather would toy around with any fight from that era who was around his size. Even Bradley, Khan or JMM.

HW got too many fat uninspirering slobs these days though, so they might not have good chance. But give the K brothers a time machine. Let them keep their current skill level then watch how they would WRECK anyone from that era.