On March 24, 2001, the 26-year-old IBF cruiserweight world champion, Vassiliy Jirov (27-0, 25 KOs), faced Terry McGroom, in a title defense fight.
Jirov came in to the fight on a 27-fight win streak with a 92% KO rate, and was fighting after a gap of 1 month and 18 days.
Vassiliy Jirov made quick work of Terry McGroom, stopping the challenger via KO in the 1st. Jirov improves his record to 28-0 (26 KOs)
On February 6, 2001, the 26-year-old IBF cruiserweight world champion, Vassiliy Jirov (26-0, 24 KOs), faced Alex Gonzales, in a title defense fight.
Jirov came in to the fight on a 26-fight win streak with a 92% KO rate, and was fighting after a gap of 6 months and 8 days.
Vassiliy Jirov made quick work of Alex Gonzales, stopping the challenger via KO in the 1st. Jirov improves his record to 27-0 (25 KOs)
On June 5, 1999, a 25-year-old Vassiliy Jirov (20-0, 18 KOs) got a shot at the IBF cruiserweight title held by Arthur Williams.
Jirov came in to the fight on a 20-fight win streak with a 90% KO rate, and was fighting after a gap of 1 month and 14 days.
Vassiliy Jirov stopped the champion via TKO in the 7th round of the 12-round world-title fight, winning the first world title of his career, and is crowned the new IBF cruiserweight champion. Jirov improves his record to 21-0 (19 KOs)
On September 8, 2001, the 27-year-old IBF cruiserweight world champion, Vassiliy Jirov (29-0, 26 KOs), faced Julian Letterlough, in a title defense fight.
Jirov came in to the fight on a 29-fight win streak with a 89% KO rate, and was fighting after a gap of 1 month and 19 days.
Vassiliy Jirov stopped Julian Letterlough via TKO in the 8th round of the 12-round world-title fight, and successfully defended his IBF cruiserweight title. Jirov improves his record to 30-0 (27 KOs)
On February 12, 2000, the 25-year-old IBF cruiserweight world champion, Vassiliy Jirov (22-0, 20 KOs), faced Saúl Montana, in a title defense fight.
Jirov came in to the fight on a 22-fight win streak with a 90% KO rate, and was fighting after a gap of 4 months and 25 days.
Vassiliy Jirov stopped Saúl Montana via TKO in the 9th round of the 12-round world-title fight, and successfully defended his IBF cruiserweight title. Jirov improves his record to 23-0 (21 KOs)
On February 1, 2002, the 27-year-old IBF cruiserweight world champion, Vassiliy Jirov (30-0, 27 KOs), faced a 34-year-old Argentinian boxer Jorge Castro (119-7-3, 83 KOs), in a title defense fight.
Jirov came in to the fight on a 30-fight win streak with a 90% KO rate, and was fighting after a gap of 4 months and 24 days. Castro was on a 4-fight win streak with a 64% KO rate, and fighting after a layoff of 3 months and 12 days.
Vassiliy Jirov defeated Jorge Castro via unanimous decision and successfully defended his IBF cruiserweight title. Jirov improves his record to 31-0, while Castro adds a loss to his record at 119-8-3.
On December 6, 1997, a 23-year-old Vassiliy Jirov (10-0, 10 KOs) and Art Jimmerson met in the ring.
Jirov came in to the fight on a 10-fight win streak with a 100% KO rate, and was fighting after a gap of 1 month and 18 days.
Vassiliy Jirov stopped Art Jimmerson via TKO in the 2nd round. Jirov improves his record to 11-0 (11 KOs)
On April 26, 2003, the 29-year-old IBF cruiserweight world champion, Vassiliy Jirov (31-0, 27 KOs), faced a 34-year-old American boxer James Toney (65-4-2, 42 KOs), in a title defense fight.
Jirov came in to the fight on a 31-fight win streak with a 87% KO rate, and was fighting after a gap of 1 year, 2 months, and 25 days. Toney was on a 11-fight win streak with a 59% KO rate, and fighting after a layoff of 8 months and 8 days.
James Toney defeated Vassiliy Jirov via unanimous decision and wins the IBF title. Toney improves his record to 66-4-2, while Jirov adds a loss to his record at 31-1.
On August 7, 2003, a 29-year-old Vassiliy Jirov (31-1, 27 KOs) and Ernest Mateen met in the ring.
Jirov came in to the fight on a 1-fight losing streak with a 84% KO rate, and was fighting after a gap of 3 months and 12 days.
Vassiliy Jirov stopped Ernest Mateen via TKO in the 7th round. Jirov improves his record to 32-1 (28 KOs)
On September 18, 1999, a 25-year-old Vassiliy Jirov (21-0, 19 KOs) and Dale Brown met in the ring.
Jirov came in to the fight on a 21-fight win streak with a 90% KO rate, and was fighting after a gap of 3 months and 13 days.
Vassiliy Jirov stopped Dale Brown via KO in the 10th round. Jirov improves his record to 22-0 (20 KOs)