Marcus "Conan" Silveira
| First Name : | Marcus |
| Last name : | Silveira |
| Nickname : | Conan |
| Height : | 6'3" (191cm) |
| Weight : | 242 lbs (110 kg) |
| City : | Rio de Janeiro |
| Country : | Brazil |
| Style : | Brazilian Jiu-Jitsu |
| Record : | 2 - 4 - 0 (Wins - Losses - Draws) |
| Wins : |
1 N/A (50%) 1 Submission (Arm Triangle Choke) (50%) |
| Losses : |
1 TKO (25%) 1 No Contest - Premature Stoppage (25%) 1 Submission (Armbar) (25%) 1 Submission (Arm Triangle Choke) (25%) |
| Association : | American Top Team |
| Match Stats | ||||||
| Result | Opponent | Method | Event Title | Date | Round | Time |
| Lost | Wes Sims | TKO | HOOKnSHOOT - Absolute Fighting Championships 1 | Dec 13, 2002 | 2 | 2:13 Sec |
| Lost | Dan Severn | Submission (Arm Triangle Choke) | WEF 9 - World Class | May 13, 2000 | 1 | 4:46 Sec |
| Win | Maurice Smith | Submission (Arm Triangle Choke) | WEF 7 - Stomp in the Swamp | Oct 9, 1999 | 2 | 2:48 Sec |
| Win | Patrick Smith | N/A | WEF 6 - World Extreme Fighting 6 | Jun 12, 1999 | 0 | |
| Lost | Kazushi Sakuraba | No Contest - Premature Stoppage | UFC Japan - Ultimate Japan 1 | Dec 21, 1997 | 1 | |
| Lost | Kazushi Sakuraba | Submission (Armbar) | UFC Japan - Ultimate Japan 1 | Dec 21, 1997 | 1 | 3:44 Sec |