Dennis Siver has 11 losses against 11 opponents on his MMA record. For a list of Siver's best fights, refer to "Best fights of Dennis Siver".
On June 20, 2015 Dennis Siver faced off against Tatsuya Kawajiri in a featherweight bout at age 36. He was coming in with a record of 22-11 (14), and Kawajiri was 37 years old and with a record of 33-8-2 (20). Siver lost the fight via 3-round unanimous decision.
On January 18, 2015 Dennis Siver faced off against Conor McGregor in a featherweight bout at age 36. He was coming in with a record of 22-10 (14), and McGregor was 26 years old and with a record of 16-2 (15). Siver lost the fight via 2nd-round TKO.
On July 6, 2013 Dennis Siver faced off against Cub Swanson in a featherweight bout at age 34. He was coming in with a record of 21-9 (14), and Swanson was 29 years old and with a record of 19-5 (14). Siver lost the fight via 3rd-round TKO.
On October 29, 2011 Dennis Siver faced off against Donald Cerrone in a welterweight bout at age 32. He was coming in with a record of 19-8 (14), and Cerrone was 28 years old and with a record of 16-3 (13). Siver lost the fight via 1st-round submission.
On March 31, 2010 Dennis Siver faced off against Ross Pearson in a welterweight bout at age 31. He was coming in with a record of 15-7 (13), and Pearson was 25 years old and with a record of 10-3 (8). Siver lost the fight via 3-round unanimous decision.
On July 5, 2008 Dennis Siver faced off against Melvin Guillard in a welterweight bout at age 29. He was coming in with a record of 11-6 (9), and Guillard was 25 years old and with a record of 22-7-2 (17). Siver lost the fight via 1st-round KO.
On January 23, 2008 Dennis Siver faced off against Gray Maynard in a welterweight bout at age 29. He was coming in with a record of 11-5 (9), and Maynard was 28 years old and with a record of 3-0 (2). Siver lost the fight via 3-round unanimous decision.
On April 21, 2007 Dennis Siver faced off against Jess Liaudin in a welterweight bout at age 28. He was coming in with a record of 10-4 (8), and Liaudin was 33 years old and with a record of 12-8 (11). Siver lost the fight via 1st-round submission.
On May 6, 2006 Dennis Siver faced off against Daniel Weichel at age 27. He was coming in with a record of 7-3 (6), and Weichel was 21 years old and with a record of 10-2 (7). Siver lost the fight via 1st-round submission.
On March 5, 2006 Dennis Siver faced off against Arni Isaksson at age 27. He was coming in with a record of 7-2 (6). Siver lost the fight via 2nd-round submission.
On October 8, 2005 Dennis Siver faced off against Fabricio Nascimento at age 26. He was coming in with a record of 5-1 (4). Siver lost the fight via 1st-round submission.
