Here is a list of Wach's best fights. For a list of Wach's losses, refer to "Mariusz Wach Losses".
On March 18, 2017 Mariusz Wach faced off against Erkan Teper in a heavyweight bout at age 37. He was coming in with a record of 33-2 (17), and Teper was 34 years old and with a record of 15-1 (9). Wach won the fight via 12-round unanimous decision.
On June 12, 2020 Mariusz Wach faced off against Kevin Johnson in a heavyweight bout at age 40. He was coming in with a record of 36-6 (19), and Johnson was 40 years old and with a record of 34-16-1 (18). Wach won the fight via 10-round unanimous decision.
On July 29, 2011 Mariusz Wach faced off against Kevin McBride in a heavyweight bout at age 31. He was coming in with a record of 25-0 (13), and McBride was 38 years old and with a record of 35-9-1 (29). Wach stopped Kevin McBride via KO.
On July 17, 2010 Mariusz Wach faced off against Christian Hammer in a heavyweight bout at age 30. He was coming in with a record of 22-0 (10), and Hammer was 22 years old and with a record of 7-1 (4). Wach stopped Christian Hammer via KO.