Chael Sonnen has 17 losses against 14 opponents on his MMA record. For a list of Sonnen's best fights, refer to "Best fights of Chael Sonnen".
On June 14, 2019 Chael Sonnen faced off against Lyoto Machida in a light-heavyweight bout at age 42. He was coming in with a record of 31-17-1 (12), and Machida was 41 years old and with a record of 25-8 (12). Sonnen lost the fight via 2nd-round TKO.
On October 13, 2018 Chael Sonnen faced off against Fedor Emelianenko in a heavyweight bout at age 41. He was coming in with a record of 31-16-1 (12), and Emelianenko was 42 years old and with a record of 37-5 (28). Sonnen lost the fight via 1st-round TKO.
On January 21, 2017 Chael Sonnen faced off against Tito Ortiz in a light-heavyweight bout at age 39. He was coming in with a record of 29-15-1 (12), and Ortiz was 41 years old and with a record of 18-12-1 (11). Sonnen lost the fight via 1st-round submission.
On November 16, 2013 Chael Sonnen faced off against Rashad Evans in a light-heavyweight bout at age 36. He was coming in with a record of 29-14-1 (12), and Evans was 34 years old and with a record of 18-3-1 (8). Sonnen lost the fight via 1st-round TKO.
On April 27, 2013 Chael Sonnen fought Jon Jones in a light-heavyweight title fight for Jones' UFC Championship title. Sonnen was 36 years old and with a record of 28-13-1 (11), and Jones was 25 years old and with a record of 17-1 (13). Sonnen lost the fight via 1st-round TKO.
On July 7, 2012 Chael Sonnen fought Anderson Silva in a middleweight title fight for Silva's UFC Championship title. Sonnen was 35 years old and with a record of 28-12-1 (11), and Silva was 37 years old and with a record of 31-4 (24). Sonnen lost the fight via 2nd-round TKO.
On August 7, 2010 Chael Sonnen fought Anderson Silva in a middleweight title fight for Silva's UFC Championship title. Sonnen was 33 years old and with a record of 26-11-1 (10), and Silva was 35 years old and with a record of 28-4 (21). Sonnen lost the fight via 5th-round submission.
On February 21, 2009 Chael Sonnen faced off against Demian Maia in a middleweight bout at age 31. He was coming in with a record of 23-10-1 (10), and Maia was 31 years old and with a record of 10-0 (8). Sonnen lost the fight via 1st-round submission.
On December 12, 2007 Chael Sonnen fought Paulo Filho in a middleweight title fight for Filho's WEC Championship title. Sonnen was 30 years old and with a record of 21-9-1 (10), and Filho was 29 years old and with a record of 15-0 (8). Sonnen lost the fight via 2nd-round submission.
On May 27, 2006 Chael Sonnen faced off against Jeremy Horn in a light-heavyweight bout at age 29. He was coming in with a record of 16-8-1 (6), and Horn was 30 years old and with a record of 77-14-5 (65). Sonnen lost the fight via 2nd-round submission.
On October 7, 2005 Chael Sonnen faced off against Renato Sobral in a light-heavyweight bout at age 28. He was coming in with a record of 15-7-1 (6), and Sobral was 30 years old and with a record of 28-6 (17). Sonnen lost the fight via 2nd-round submission.
On December 3, 2004 Chael Sonnen faced off against Terry Martin in a middleweight bout at age 27. He was coming in with a record of 13-6-1 (4), and Martin was 24 years old and with a record of 6-1 (5). Sonnen lost the fight via 2nd-round TKO.
On September 23, 2004 Chael Sonnen faced off against Jeremy Horn in a middleweight bout at age 27. He was coming in with a record of 12-5-1 (4), and Horn was 29 years old and with a record of 71-13-5 (61). Sonnen lost the fight via 2nd-round submission.
On July 25, 2004 Chael Sonnen faced off against Keiichiro Yamamiya in a middleweight bout at age 27. He was coming in with a record of 12-4-1 (4), and Yamamiya was 32 years old and with a record of 31-18-8 (11). Sonnen lost the fight via 3-round majority decision.
On May 6, 2004 Chael Sonnen faced off against Jeremy Horn in a middleweight bout at age 27. He was coming in with a record of 12-3-1 (4), and Horn was 28 years old and with a record of 68-12-5 (58). Sonnen lost the fight via 1st-round TKO.
On September 6, 2003 Chael Sonnen faced off against Forrest Griffin in a light-heavyweight bout at age 26. He was coming in with a record of 7-2-1 (2), and Griffin was 24 years old and with a record of 7-1 (5). Sonnen lost the fight via 1st-round submission.
On January 25, 2003 Chael Sonnen faced off against Trevor Prangley in a light-heavyweight bout at age 25. He was coming in with a record of 6-1 (2), and Prangley was 30 years old and with a record of 5-0 (3). Sonnen lost the fight via 1st-round choke-out.
