At this page there is a reprint of a December 1905 article on an encounter between a boxer and a jujutsuka. A few things I found interesting:
(The annotations dispute the feasibility of this.)
Jiu jitsu was intended to enable an entirely unarmed man to defend himself successfully against armed men.
One that Higashi showed me a few days ago was used when an unarmed man was attacked by one with a sword. Part of the combination of movements involved the losing of an arm by the unarmed fighter, in guarding against the swordsman's cut or thrust. But after that, losing his left or right hand at the wrist, he could instantly gain a one-armed strangle hold on his opponent that would end the contest. "In the old hand-to-hand fighting days Japanese noblemen used these tricks on the battlefield."
(The annotations dispute the feasibility of this.)
If the boxer stepped away warily he would escape. But any strong man can take blow after blow without being knocked out. Boxing is full of clinches. The first clinch would date the victory of the jiu jitsu man.
Tani is of about a hundred and ten pounds weight. He landed in England a couple of years ago [1899], and at once began the practice of his art, trimmed down to suit the requirements of English law, which does not encourage bone breaking.