Joseph Bartlett "Joe" Choynski (ˈtʃɔɪnski; November 8, 1868 – January 24, 1943) was an American boxer

Boxing

Boxing, also called pugilism, is a combat sport in which two people fight each other using their fists. Boxing is supervised by a referee over a series of between one to three minute intervals called rounds...

 who fought professionally from 1888 to 1904.
"Chrysanthemum Joe", the son of a Polish immigrant that settled in California in 1867, weighed no more than 176 lb (80 kg) throughout his career but regularly fought heavyweights. He was considered a heavy puncher and a dangerous fighter.
In fact, James J. Jeffries

James J. Jeffries

James Jackson Jeffries was a world heavyweight boxing champion.His greatest assets were his enormous strength and stamina. Using a technique taught to him by his trainer, former welterweight and middleweight champion Tommy Ryan, Jeffries fought out of a crouch with his left arm extended forward...

 claimed that the hardest blow he ever received in a bout came from Choynski during their 20-round draw.