Marco Ruas has four losses against three opponents on his MMA record. For a list of Ruas's best fights, refer to "Best fights of Marco Ruas".
On May 19, 2007 Marco Ruas faced off against Maurice Smith at age 46. He was coming in with a record of 9-4-2 (9), and Smith was 45 years old and with a record of 11-12 (8). Ruas lost the fight via 4th-round TKO.
On July 16, 1999 Marco Ruas faced off against Maurice Smith at age 38. He was coming in with a record of 8-3-2 (8), and Smith was 37 years old and with a record of 7-9 (6). Ruas lost the fight via 1st-round TKO.
On October 11, 1998 Marco Ruas faced off against Alexander Otsuka at age 37. He was coming in with a record of 8-2-2 (8), and Otsuka was 27 years old and with a record of 0-2 (0). Ruas lost the fight via 2nd-round TKO.
On December 16, 1995 Marco Ruas faced off against Oleg Taktarov at age 34. He was coming in with a record of 5-1-1 (5), and Taktarov was 28 years old and with a record of 8-1-1 (8). Ruas lost the fight via 1-round unanimous decision.
