Here is a list of Guimarães's best fights. For a list of Guimarães's losses, refer to "Marcelo Guimarães Losses".
On July 11, 2012 Marcelo Guimarães faced off against Dan Stittgen in a welterweight bout at age 29. He was coming in with a record of 8-0-1 (2). Guimarães won the fight via 3-round split decision.
On June 28, 2014 Marcelo Guimarães faced off against Andy Enz in a middleweight bout at age 31. He was coming in with a record of 9-1-1 (2), and Enz was 22 years old and with a record of 10-2 (8). Guimarães won the fight via 3-round split decision.
On August 20, 2011 Marcelo Guimarães fought Lucas Rota in a middleweight title fight for Rota's Jungle Fight Championship title. Guimarães was 28 years old and with a record of 7-0-1 (2). Guimarães stopped Lucas Rota via 2nd-round choke-out and is crowned the new middleweight world champion.
On May 21, 2011 Marcelo Guimarães faced off against Ildemar Alcântara at age 27. He was coming in with a record of 6-0-1 (2), and Alcântara was 28 years old and with a record of 10-4 (9). Guimarães won the fight via 3-round unanimous decision.
On February 27, 2010 Marcelo Guimarães faced off against Gilmar de Andrade at age 26. He was coming in with a record of 2-0-1 (0). Guimarães won the fight via 3-round unanimous decision.
On February 19, 2011 Marcelo Guimarães faced off against Paulo Rodrigues at age 27. He was coming in with a record of 5-0-1 (2). Guimarães won the fight via 3-round unanimous decision.
