On December 10, 2016, 24-year-old Joseph Parker (21-0, 18 KOs) and 27-year-old Andy Ruiz Jr. (29-0, 19 KOs) fought for the vacant WBO heavyweight title.
Parker came in to the fight on a 21-fight win streak with a 85% KO rate, and was fighting after a gap of 2 months and 9 days. Ruiz Jr. was on a 29-fight win streak with a 65% KO rate, and fighting after a layoff of 3 months.
Joseph Parker defeated Andy Ruiz Jr. via majority decision . Parker improves his record to 22-0, while Ruiz Jr. adds a loss to his record at 29-1.
On March 8, 2024, a 32-year-old Joseph Parker (34-3, 23 KOs) and a 40-year-old Chinese boxer Zhang Zhilei (26-1-1, 21 KOs) met in the ring in a heavyweight bout.
Parker came in to the fight on a 4-fight win streak with a 62% KO rate, and was fighting after a gap of 2 months and 14 days. Zhilei was on a 2-fight win streak with a 75% KO rate, and fighting after a layoff of 5 months and 14 days.
Joseph Parker defeated Zhang Zhilei via majority decision in the 12-round heavyweight fight. Parker improves his record to 35-3, while Zhilei adds a loss to his record at 26-2-1.
On May 6, 2017, the 25-year-old WBO heavyweight world champion, Joseph Parker (22-0, 18 KOs), faced Răzvan Cojanu, in a title defense fight.
Parker came in to the fight on a 22-fight win streak with a 81% KO rate, and was fighting after a gap of 4 months and 26 days.
Joseph Parker defeated Răzvan Cojanu via unanimous decision and successfully defended his WBO heavyweight title. Parker improves his record to 23-0
On August 1, 2015, a 23-year-old Joseph Parker (14-0, 12 KOs) and Bowie Tupou met in the ring in a heavyweight bout.
Parker came in to the fight on a 14-fight win streak with a 85% KO rate, and was fighting after a gap of 1 month and 19 days.
Joseph Parker stopped Bowie Tupou via KO in the 1st round. Parker improves his record to 15-0 (13 KOs)
On October 1, 2016, a 24-year-old Joseph Parker (20-0, 17 KOs) and a 34-year-old Ukrainian boxer Alexander Dimitrenko (38-2, 24 KOs) met in the ring in a heavyweight bout.
Parker came in to the fight on a 20-fight win streak with a 85% KO rate, and was fighting after a gap of 2 months and 10 days. Dimitrenko was on a 6-fight win streak with a 60% KO rate, and fighting after a layoff of 8 months and 15 days.
Joseph Parker stopped Alexander Dimitrenko via KO in the 3rd round. Parker improves his record to 21-0 (18 KOs), while Dimitrenko adds a loss to his record at 38-3.
On September 23, 2017, the 25-year-old WBO heavyweight world champion, Joseph Parker (23-0, 18 KOs), faced a 23-year-old British boxer Hughie Fury (20-0, 10 KOs), in a title defense fight.
Parker came in to the fight on a 23-fight win streak with a 78% KO rate, and was fighting after a gap of 4 months and 17 days. Fury was on a 20-fight win streak with a 50% KO rate, and fighting after a layoff of 1 year, 4 months, and 24 days.
Joseph Parker defeated Hughie Fury via majority decision and successfully defended his WBO heavyweight title. Parker improves his record to 24-0, while Fury adds a loss to his record at 20-1.
On October 28, 2023, a 31-year-old Joseph Parker (32-3, 22 KOs) and a 34-year-old Canadian boxer Simon Kean (23-1, 22 KOs) met in the ring in a heavyweight bout.
Parker came in to the fight on a 2-fight win streak with a 62% KO rate, and was fighting after a gap of 5 months and 4 days. Kean was on a 8-fight win streak with a 91% KO rate, and fighting after a layoff of 7 months and 5 days.
Joseph Parker stopped Simon Kean via TKO in the 3rd round. Parker improves his record to 33-3 (23 KOs), while Kean adds a loss to his record at 23-2.
On December 23, 2023, a 31-year-old Joseph Parker (33-3, 23 KOs) and a 38-year-old American boxer Deontay Wilder (43-2-1, 42 KOs) met in the ring in a heavyweight bout.
Parker came in to the fight on a 3-fight win streak with a 63% KO rate, and was fighting after a gap of 1 month and 25 days. Wilder was on a 1-fight win streak with a 91% KO rate, and fighting after a layoff of 1 year, 2 months, and 8 days.
Joseph Parker defeated Deontay Wilder via unanimous decision in the 12-round heavyweight fight. Parker improves his record to 34-3, while Wilder adds a loss to his record at 43-3-1.
On October 15, 2015, a 23-year-old Joseph Parker (15-0, 13 KOs) and Kali Meehan met in the ring in a heavyweight bout.
Parker came in to the fight on a 15-fight win streak with a 86% KO rate, and was fighting after a gap of 2 months and 14 days.
Joseph Parker stopped Kali Meehan via TKO in the 3rd round. Parker improves his record to 16-0 (14 KOs)
On July 21, 2016, a 24-year-old Joseph Parker (19-0, 16 KOs) and Solomon Haumono met in the ring in a heavyweight bout.
Parker came in to the fight on a 19-fight win streak with a 84% KO rate, and was fighting after a gap of 2 months.
Joseph Parker stopped Solomon Haumono via TKO in the 4th round. Parker improves his record to 20-0 (17 KOs)