1875 – born – April 15th, in Carroll, Ohio, USA.
He received his nickname because he worked in a boiler factory. He trained as sparring partner to ‘Gentleman’ Jim Corbett.
1899 – Won the world heavyweight championship by knocking out Bob Fitzsimmons in 11 rounds.
Jeffries stood 6 ft 3 in tall and weighed 225 in his prime. Despite his bulk, Jeffries, who was not a trained sprinter, could run the 100 yards in a little more than ten seconds.
1900 – World record in the 100 yard dash was a little under ten seconds. While working as a sparring partner for James J. Corbett.
Jeffries consistently outsprinted Corbett. Corbett was an outstanding all around athlete and had never lost a footrace to any of his campmates. Jeffries was also nimble and could purportedly high jump over six feet.
Jeffries has the record for the quickest KO in a heavyweight title fight ever, which was 55 seconds against Finnegan. During his reign as champion, Jeffries defended his title seven times, including two knockout victories over former champion Corbett. He won a 25 round decision over Tom Sharkey. Jeffries broke the ribs of three opponents in title fights: Jim Corbett, Gus Ruhlin, and Tom Sharkey.
1905 – Jeffries retired undefeated in May.
He served as a referee for the next few years, including the bout in which Marvin Hart defeated Jack Root to stake a claim at Jeffries’ vacated ‘title.’
1910 – He persuaded to return to the ring as the ‘great white hope’ against the new black champion, Jack Johnson, who knocked him out in the 15th round. Jeffries made no excuses at the time. However, later in his biography he implied that he had been drugged prior to meeting Johnson. Johnson, in his own biography, named Jeffries as the greatest heavyweight of all time.
In Jeffries later years, Jeffries trained boxers and worked as a fight promoter. He promoted many fights out of a structure known as "Jeffries Barn." Jeffries Barn is now part of Knott’s Berry Farm, a Southern California amusement park.
1953 – He was interred in the Inglewood Park Cemetery in Inglewood California.
1990 – James J. Jeffries was elected to the International Boxing Hall of Fame.