Ranking Sherdog

Heavyweight

1. Fedor Emelianenko (30-1, 1 NC)
2. Brock Lesnar (4-1)
3. Josh Barnett (24-5)
4. Frank Mir (12-4)
5. Antonio Rodrigo Nogueira (32-5-1, 1 NC)
6. Brett Rogers (10-0)
7. Andrei Arlovski (15-7)
8. Randy Couture (16-10)
9. Shane Carwin (11-0)
10. Junior dos Santos (8-1)

*With no activity in the last 10 months, the idling Alistair Overeem slips just outside the top 10 and onto the contenders list.

Light Heavyweight

1. Lyoto Machida (15-0)
2. Quinton Jackson (30-7)
3. Rashad Evans (13-1-1)
4. Mauricio Rua (18-3)
5. Forrest Griffin (16-6)
6. Thiago Silva (14-1)
7. Gegard Mousasi (26-2-1)
8. Luis Arthur Cane (10-1)
9. Rich Franklin (25-4, 1 NC)
10. Antonio Rogerio Nogueira (17-3)

*With the re-entry of sixth-ranked Thiago Silva and the addition of seventh-ranked Gegard Mousasi, formerly ninth-ranked Keith Jardine and 10th-ranked Wanderlei Silva fall to the bubble list.

Middleweight

1. Anderson Silva (25-4)
2. Nate Marquardt (29-8-2)
3. Yushin Okami (23-4)
4. Dan Henderson (25-7)
5. Demian Maia (10-1)
6. Jorge Santiago (21-7)
7. Vitor Belfort (18-8)
8. Robbie Lawler (16-5, 1 NC)
9. Chael Sonnen (23-10-1)
10. Yoshihiro Akiyama (13-1, 2 NC)

Welterweight

1. Georges St. Pierre (19-2)
2. Jon Fitch (19-3, 1 NC)
3. Thiago Alves (16-4)
4. Jake Shields (23-4-1)
5. Martin Kampmann (15-2)
6. Paulo Thiago (11-1)
7. Josh Koscheck (12-4)
8. Carlos Condit (22-5)
9. Mike Swick (14-2)
10. Dan Hardy (22-6, 1 NC)

Lightweight

1. B.J. Penn (14-5-1)
2. Shinya Aoki (21-4, 1 NC)
3. Eddie Alvarez (18-2)
4. Kenny Florian (11-4)
5. Tatsuya Kawajiri (24-5-2)
6. Gray Maynard (7-0, 1 NC)
7. Frankie Edgar (10-1)
8. Sean Sherk (33-4-1)
9. Mizuto Hirota (12-3-1)
10. Satoru Kitaoka (25-9-9)

Featherweight

1. Mike Thomas Brown (22-4)
2. Urijah Faber (22-3)
3. Wagnney Fabiano (12-1)
4. Hatsu Hioki (20-3-2)
5. Leonard Garcia (13-4)
6. Jose Aldo (15-1)
7. Takeshi Inoue (16-3)
8. Raphael Assuncao (13-1)
9. Masanori Kanehara (14-6-5)
10. Bibiano Fernandes (5-2)

Bantanweight

1. Brian Bowles (8-0)
2. Miguel Torres (37-2)
3. Masakatsu Ueda (10-0-2)
4. Takeya Mizugaki (12-3-2)
5. Dominick Cruz (14-1)
6. Joseph Benavidez (10-1)
7. Akitoshi Tamura (14-7-2)
8. Manny Tapia (10-2-1)
9. Damacio Page (11-4)
10. Rani Yahya (15-4)

Fonte: Sherdog.com