Sebastian Sylvester has five losses against five opponents on his boxing record. For a list of Sylvester's best fights, refer to "Best fights of Sebastian Sylvester".
On October 1, 2011 Sebastian Sylvester faced off against Grzegorz Proksa in a middleweight bout at age 31. He was coming in with a record of 34-5-1 (16), and Proksa was 26 years old and with a record of 25-0 (18). Sylvester lost the fight via 3rd-round retirement.
On May 7, 2011 Sebastian Sylvester met Daniel Geale in a middleweight (IBF) world-title defense fight. Sylvester was 30 years old and with a record of 34-4-1 (16), and Geale was 30 years old and with a record of 24-1 (15). Sylvester lost the fight via 12-round split decision and lost the title.
On November 1, 2008 Sebastian Sylvester fought Felix Sturm in a middleweight world-title fight for Sturm's WBA title. Sylvester was 28 years old and with a record of 29-3 (14), and Sturm was 29 years old and with a record of 30-2-1 (13). Sylvester lost the fight via 12-round unanimous decision.
On June 3, 2006 Sebastian Sylvester faced off against Amin Asikainen in a middleweight bout at age 25. He was coming in with a record of 21-2 (9), and Asikainen was 30 years old and with a record of 17-0 (13). Sylvester lost the fight via 8th-round TKO.
On May 26, 2002 Sebastian Sylvester faced off against Yuri Zaytsev at age 21. He was coming in with a record of 0-1 (0). Sylvester lost the fight via 1st-round KO.
