Ryo Chonan has 13 losses against 13 opponents on his MMA record. For a list of Chonan's best fights, refer to "Best fights of Ryo Chonan".
On December 31, 2011 Ryo Chonan faced off against Hayato Sakurai in a middleweight bout at age 35. He was coming in with a record of 20-13 (9), and Sakurai was 36 years old and with a record of 35-12-2 (21). Chonan lost the fight via 3-round unanimous decision.
On December 30, 2010 Ryo Chonan faced off against Taisuke Okuno in a middleweight bout at age 34. He was coming in with a record of 18-12 (8), and Okuno was 33 years old and with a record of 10-5-2 (8). Chonan lost the fight via 1st-round KO.
On April 25, 2010 Ryo Chonan faced off against Jung Hwan Cha in a middleweight bout at age 33. He was coming in with a record of 17-11 (7). Chonan lost the fight via 2nd-round KO.
On April 18, 2009 Ryo Chonan faced off against T. J. Grant in a middleweight bout at age 32. He was coming in with a record of 15-10 (7). Chonan lost the fight via 3-round split decision.
On December 27, 2008 Ryo Chonan faced off against Brad Blackburn in a middleweight bout at age 32. He was coming in with a record of 15-9 (7), and Blackburn was 31 years old and with a record of 16-9-1 (13). Chonan lost the fight via 3-round unanimous decision.
On November 17, 2007 Ryo Chonan faced off against Karo Parisyan in a middleweight bout at age 31. He was coming in with a record of 14-8 (7), and Parisyan was 25 years old and with a record of 17-4 (9). Chonan lost the fight via 3-round unanimous decision.
On August 26, 2006 Ryo Chonan faced off against Paulo Filho in a welterweight bout at age 29. He was coming in with a record of 12-7 (6), and Filho was 28 years old and with a record of 12-0 (5). Chonan lost the fight via 1st-round submission.
On September 25, 2005 Ryo Chonan faced off against Dan Henderson at age 28. He was coming in with a record of 10-6 (5), and Henderson was 35 years old and with a record of 16-4 (7). Chonan lost the fight via 1st-round KO.
On July 17, 2005 Ryo Chonan faced off against Phil Baroni at age 28. He was coming in with a record of 10-5 (5), and Baroni was 29 years old and with a record of 7-5 (6). Chonan lost the fight via 1st-round KO.
On May 23, 2004 Ryo Chonan faced off against Ricardo Almeida at age 27. He was coming in with a record of 6-4 (3), and Almeida was 27 years old and with a record of 7-2 (3). Chonan lost the fight via 2-round unanimous decision.
On December 8, 2002 Ryo Chonan faced off against Masanori Suda at age 26. He was coming in with a record of 3-3 (2), and Suda was 29 years old and with a record of 18-9-1 (12). Chonan lost the fight via 3-round split decision.
On June 9, 2002 Ryo Chonan faced off against Eiji Ishikawa at age 25. He was coming in with a record of 2-2 (1). Chonan lost the fight via 2-round majority decision.
On May 5, 2001 Ryo Chonan faced off against Hikaru Sato at age 24. He was coming in with a record of 0-1 (0), and Sato was 20 years old and with a record of 2-5 (1). Chonan lost the fight via 3-round unanimous decision.
