Maciej Sulęcki has four losses against four opponents on his boxing record. For a list of Sulęcki's best fights, refer to "Best fights of Maciej Sulęcki".
On June 27, 2025 Maciej Sulęcki faced off against Christian Mbilli in a super-middleweight bout at age 36. He was coming in with a record of 33-4 (13), and Mbilli was 30 years old and with a record of 28-0 (23). Sulęcki lost the fight via 1st-round KO.
On August 31, 2024 Maciej Sulęcki faced off against Diego Pachecho in a super-middleweight bout at age 35. He was coming in with a record of 32-3 (12). Sulęcki lost the fight via 6th-round KO.
On June 29, 2019 Maciej Sulęcki fought Demetrius Andrade in a middleweight world-title fight for Andrade's WBO title. Sulęcki was 30 years old and with a record of 28-2 (11), and Andrade was 31 years old and with a record of 27-0 (17). Sulęcki lost the fight via 12-round unanimous decision.
On April 28, 2018 Maciej Sulęcki faced off against Daniel Jacobs in a super-middleweight bout at age 28. He was coming in with a record of 26-1 (10), and Jacobs was 31 years old and with a record of 33-2 (29). Sulęcki lost the fight via 12-round unanimous decision.
