Check out my rankings within each division by clicking on the links below.
Note: Results through Feb. 12, 2018
BANTAMWEIGHT DIVISION (UP TO 135 POUNDS)
1. TJ Dillashaw (15-3)
The UFC strap is back around Dillashaw's waist, and it never should have left it according to him. Dillashaw's knockout over Cody Garbrandt was one of the top performances of the year and he heads into 2018 with several big fights on the table.
2. Cody Garbrandt (11-1)
Garbrandt went into UFC 217 looking like one of the sport's future stars. Even though he left with a loss, that's still very much the case. He's one of the most talented, charismatic figures in the UFC. This loss shouldn't set him back too far.
3. Dominick Cruz (22-2)
For the first time in just about ever, Cruz struggled to get out of the way of his opponent's offense. A loss to Cody Garbrandt at UFC 207 does not erase what was otherwise a historical year for Cruz, who reclaimed his title after multiple injuries.
4. Raphael Assuncao (26-5)
Assuncao is incapable of talking trash, but that is now the only thing holding him back from a title shot. No one has a resume that matches his, at the moment. He's 10-1 in his last 11, with the only loss coming to T.J. Dillashaw.
5. John Lineker (29-8)
Lineker remains one of the most dangerous fighters in the division, but a decision loss to TJ Dillashaw at UFC 207 highlighted some of his shortcomings as a mixed martial artist. Still, with the power he possesses, he'll always be in the mix.
6. Marlon Moraes (20-5-1)
Moraes' UFC debut didn't go off as planned, when he dropped a split decision to Raphael Assuncao in June 2017. But then he picked up two victories in a span of less than a month, including a highlight reel knockout over Aljamain Sterling.
7. Jimmie Rivera (21-1)
The New Jersey native is on a serious tear, having won 20 fights in a row. He looked like a serious title contender in his last fight, a decision victory over Thomas Almeida in July.
8. John Dodson (19-9)
Dodson't bantamweight title aspirations have hit a rut, by the slimmest of margins. He's 2-2 since moving up in weight, with both losses coming against ranked opponents, via split decision. That's a tough break -- but 2-2 won't get him to a UFC title shot.
Next: UFC 222 on March 3, vs. Pedro Munhoz
9. Bibiano Fernandes (20-3)
Fernandes doesn't consistently go up against the top talent in the world fighting for ONE FC, but that only slightly diminishes the fact he has lost just one fight since 2008. He is coming off a submission win over Andrew Leone.
10. Pedro Munhoz (14-3)
Munhoz is 5-2 since signing with the UFC 2014. The two losses were big ones, coming against highly-ranked contenders in Raphael Assuncao and Jimmie Rivera. He's now on a four-fight win streak though, which includes three finishes.
Next: UFC 222 on March 3, vs. John Dodson