Here is a list of Semerzier's best fights. For a list of Semerzier's losses, refer to "Mackens Semerzier Losses".
On March 26, 2011 Mackens Semerzier faced off against Alex Caceres at age 30. He was coming in with a record of 6-3 (6), and Caceres was 22 years old and with a record of 5-2 (5). Semerzier stopped Alex Caceres via submission.
On October 10, 2009 Mackens Semerzier faced off against Wagnney Fabiano at age 28. He was coming in with a record of 5-0 (5), and Fabiano was 34 years old and with a record of 12-1 (9). Semerzier stopped Wagnney Fabiano via submission.
On June 27, 2009 Mackens Semerzier faced off against Kenny Foster at age 28. He was coming in with a record of 4-0 (4), and Foster was 24 years old and with a record of 1-0 (0). Semerzier stopped Kenny Foster via submission.
