Johann Duhaupas has seven losses against seven opponents on his boxing record. For a list of Duhaupas's best fights, refer to "Best fights of Johann Duhaupas".
On May 21, 2022 Johann Duhaupas faced off against Zhan Kossobutskiy in a heavyweight bout at age 41. He was coming in with a record of 39-7 (26), and Kossobutskiy was 33 years old and with a record of 17-0 (16). Duhaupas lost the fight via 5th-round retirement.
On September 25, 2020 Johann Duhaupas faced off against Tony Yoka at age 39. He was coming in with a record of 38-6 (25), and Yoka was 28 years old and with a record of 7-0 (6). Duhaupas lost the fight via 1st-round TKO.
On April 28, 2018 Johann Duhaupas faced off against Jarrell Miller at age 37. He was coming in with a record of 37-5 (24), and Miller was 29 years old and with a record of 20-0-1 (18). Duhaupas lost the fight via 12-round unanimous decision.
On December 17, 2016 Johann Duhaupas faced off against Alexander Povetkin at age 35. He was coming in with a record of 34-4 (21), and Povetkin was 37 years old and with a record of 30-1 (22). Duhaupas lost the fight via 6th-round KO.
On September 26, 2015 Johann Duhaupas fought Deontay Wilder in a heavyweight world-title fight for Wilder's WBC title. Duhaupas was 34 years old and with a record of 32-3 (20), and Wilder was 29 years old and with a record of 34-0 (33). Duhaupas lost the fight via 11th-round TKO.
On March 14, 2015 Johann Duhaupas faced off against Erkan Teper in a heavyweight bout at age 34. He was coming in with a record of 31-2 (20), and Teper was 32 years old and with a record of 13-0 (9). Duhaupas lost the fight via 12-round unanimous decision.
On December 20, 2008 Johann Duhaupas faced off against Francesco Pianeta in a heavyweight bout at age 27. He was coming in with a record of 17-1 (10), and Pianeta was 24 years old and with a record of 17-0 (11). Duhaupas lost the fight via 12-round unanimous decision.
