Here is a list of Hallmann's best fights. For a list of Hallmann's losses, refer to "Piotr Hallmann Losses".
On June 7, 2014 Piotr Hallmann faced off against Yves Edwards in a lightweight bout at age 26. He was coming in with a record of 15-2 (14), and Edwards was 37 years old and with a record of 42-20-1 (33). Hallmann stopped Yves Edwards via submission.
On September 4, 2013 Piotr Hallmann faced off against Francisco Trinaldo in a lightweight bout at age 26. He was coming in with a record of 14-1 (13), and Trinaldo was 35 years old and with a record of 13-2 (10). Hallmann stopped Francisco Trinaldo via submission.
On November 21, 2009 Piotr Hallmann faced off against Paweł Wołowiec at age 22. He was coming in with a record of 2-0 (2). Hallmann stopped Paweł Wołowiec via TKO.
On February 27, 2010 Piotr Hallmann faced off against Rafał Terlikowski at age 22. He was coming in with a record of 3-0 (3). Hallmann stopped Rafał Terlikowski via TKO.