SI.com's P4P Rankings: Jon Jones still at the top, Conor McGregor climbing

Jeff Wagenheim breaks down SI.com's pound-for-pound MMA rankings heading into 2016...

It’s a new year and a new landscape.

The last time SI.com published a pound-for-pound Top 10 for mixed martial arts, in late November, there was a startling development: Ronda Rousey, the dominant force who had spent several months at No. 1 in our rankings, disappeared in the wake of her unfathomable knockout by Holly Holm. We thought that was a game changer, but take a look at this month’s shuffling of the deck. Say goodbye to three other top-of-the-mountain stalwarts, welcome in a rising trio, and witness the slippage of another pair … one of whom won a fight just last weekend.

You know the Top 10 is on shaky legs when Jon Jones—stripped of his UFC light heavyweight belt and coming off a six-month suspension while facing a felony hit-and-run charge—is the tally’s steadying presence.

That Jones is No. 1 is old news; other than his recent exile to MMA Siberia, he’s been the sport’s alpha male for years. What is a long time coming, however, is flyweight champion Demetrious Johnson’s ascent to our No. 2 spot. A year ago, “Mighty Mouse” was at No. 5, behind José Aldo, Chris Weidman, and Rousey—also known as gone, gone and gone.

Conor McGregor emerges as UFC's biggest star in win over Jose Aldo

​Actually, Aldo hasn’t completely vanished. The Brazilian lost his featherweight belt to Conor McGregor last month in 13 seconds, but that flash knockout didn’t erase a reign of five years and a 10-year winning streak. So Aldo slips quite a bit but is clinging to our No. 9 position.

Weidman’s reign at middleweight ended that same December night, and the fourth-round TKO at the hands of Luke Rockhold was enough to separate the New Yorker from this Top 10, just as Rousey’s beat-down loss had pushed her out a month earlier.

The conquerors need a place at the table, so McGregor sits at No. 4 and Rockhold at No. 5.   

Also new to the Top 10 is lightweight champ Rafael dos Anjos, who made quick work of Donald Cerrone last month in his first title defense. He’s slotted at No. 6, pushing down Robbie Lawler. The welterweight belt holder was victorious over the weekend but wasn’t as dominant as the others, so he falls from fifth to seventh.

Dropping out entirely are a couple of teammates, ex-heavyweight champ Cain Velasquez and nominal light heavy titlist Daniel Cormier, who simply had to make room. Velasquez will be knocking at the door in a month when he challenges Fabricio Werdum—No. 3 here—for the heavyweight belt the Brazilian took from him last June. And Cormier can shine a light on himself when he rematches Jones this spring.

Josh Hedges/Zuffa LLC/Zuffa LLC via Getty Images

​Shuffle, shuffle.

So much is changing at the top of the sport. The UFC has 10 weight classes, and eight of them have seen new champions within the last 13 months. Only two current belt holders reigned prior to December 2015: T.J. Dillashaw, who puts his bantamweight belt on the line against ex-champ Dominick Cruz in less than two weeks, and Demetrious Johnson, who has been 125-pound king since way back in 2012. At least someone has managed to keep his footing during the earthquake.

On to the rankings …

1. Jon Jones

Light Heavyweight
Record: 21–1–0
Last fight: W (R5 UD) Daniel Cormier, Jan. 3, 2015

2. Demetrious Johnson

Flyweight
Record: 22–2–1
Last fight: W (R5 UD) John Dodson, Sep. 5, 2015

3. Fabricio Werdum

Heavyweight
Record: 20–5–1
Last fight: W (R3 Sub) Cain Velasquez, June 13, 2015

4. Conor McGregor

Featherweight
Record: 19–2–0
Last fight: W (R1 TKO) Jose Aldo, Dec. 12, 2015

5. Luke Rockhold

Middleweight
Record: 15–2–0
Last fight: W (R4 TKO) Chris Weidman, Dec. 12, 2015

6. Rafael Dos Anjos

Lightweight
Record: 24–7–0
Last fight: W (R1 TKO) Donald Cerrone, Dec. 19, 2015

7. Robbie Lawler

Welterweight
Record: 26–10–0
Last fight: W (R5 SD) Carlos Condit, Jan. 2, 2016

8. T.J. Dillashaw

Bantamweight
Record: 13–2–0
Last fight: W (R4 TKO) Renan Barao, July 25, 2015

9. Jose Aldo

Featherweight
Record: 25–2–0
Last fight: L (R1 TKO) Conor McGregor, Dec. 12, 2015

10. Holly Holm

Bantamweight
Record: 10–0–0
Last fight: W (R2 TKO) Ronda Rousey, Nov. 14, 2015

Heavyweight

1. Fabricio Werdum (20-5-1)
2. Cain Velasquez (13-2)
3. StipeMiocic (14-2)
4. Ben Rothwell (35-9)
5. Alistair Overeem (40-14)
6. Junior dos Santos (17-4)
7. Andrei Arlovski (25-11, 1 NC)
8. Travis Browne (17-3-1)
9. Mark Hunt (11-10-1)
10. Josh Barnett (34-7)

Velasquez finally gets his sea-level shot at redemption when he challenges Werdum for his old belt at UFC 196 on Feb. 6. The winner likely will get a date with Miocic, who starched Arlovski in less than a minute last weekend. Waiting his turn will be Overeem, who climbed from last month’s No. 9 ranking on the strength of a KO of former No. 3 Dos Santos, and maybe Rothwell, who faces Barnett later this month.

• MORE MMA: Lawler keeps title in narrow victory over Condit

Light heavyweight

1. Jon Jones (21-1)
2. Daniel Cormier (17-1)
3. Anthony Johnson (20-5)
4. Alexander Gustafsson (16-4)
5. Ryan Bader (20-4)
6. Phil Davis (13-3, 1 NC)
7. Glover Teixeira (24-4)
8. Liam McGeary (11-0)
9. Rashad Evans (19-4-1)
10. Ovince Saint Preux (18-7)

Still no date for Jones vs. Cormier II, though it’s expected to go down in New York on April 23. In the meantime, Bader will try to secure the title shot that’s so far eluded him when he faces Johnson on Jan. 30. If he beats “Rumble,” it’ll be hard to deny him.

• MORE MMA: Cruz has strong words for Dillashaw ahead of Fight Night

Middleweight

1. Luke Rockhold (15-2)
2. Chris Weidman (13-1)
3. Yoel Romero (11-1)
4. Ronaldo Souza (22-4, 1 NC)
5. VitorBelfort (25-11)
6. LyotoMachida (22-7)
7. Tim Kennedy (18-5)
8. Michael Bisping (26-7)
9. Thales Leites (25-5)
10. Robert Whittaker (15-4)

It was a 185-pound game of leapfrog at last month’s UFC 194, as Rockhold TKO’d Weidman to claim the belt and climb over him to the top of this list, and Romero edged Souza that same night. Next month Bisping welcomes Anderson Silva back from his PED vacation when they tussle in London.

• MORE MMA: The UFC fighter who pulled off the biggest bank heist ever

Welterweight

1. Robbie Lawler (27-10, 1 NC)
2. Johny Hendricks (17-3)
3. Rory MacDonald (18-3)
4. TyronWoodley (15-3)
5. Matt Brown (20-13)
6. Ben Askren (14-0)
7. Carlos Condit (30-9)
8. Demian Maia (22-6)
9. Stephen Thompson (11-1)
10. Dong Hyun Kim (21-3-1, 1 NC)

It would have been interesting if last weekend’s split decision had gone to Condit instead of Lawler, because “The Natural Born Killer” would have faced a daunting line of challengers in wrestling singlets. But instead Lawler’s improbable reign continues, and with every victory he becomes a more inspiring story of resilience and resurgence.

• MORE MMA: Florian on UFC 195, Lawler's win over Condit, more

Lightweight

1. Rafael dos Anjos (25-7)
2. Anthony Pettis (18-3)
3. Donald Cerrone (28-7, 1 NC)
4. Tony Ferguson (20-3)
5. Eddie Alvarez (26-4)
6. Will Brooks (16-1)
7. BeneilDariush (12-1)
8. EdsonBarboza (16-4)
9. Nate Diaz (18-10)
10. Gilbert Melendez (22-5)

Dos Anjos needed barely a minute to stop Cerrone, so who’s next? Will it be a rematch (Pettis, assuming the former champ can get by Eddie Alvarez this month) or a new challenge (Ferguson, coming off an impressive stoppage of Barboza)? Or will the UFC think outside the box and book the Brazilian in a superfight with new featherweight champ Conor McGregor? Hint: Follow the money.

• MORE MMA: Anjos stops Cerrone to retain belt; Is McGregor next?

Featherweight

1. Conor McGregor (19-2)
2. Frankie Edgar (20-4-1)
3. José Aldo (25-2)
4. Chad Mendes (17-4)
5. Max Holloway (15-3)
6. Ricardo Lamas (16-4)
7. Charles Oliveira (21-5, 1 NC)
8. Daniel Straus 25-6)
9. PatricioFreire (24-3)
10. Cub Swanson (21-7)

McGregor sees bigger things ahead (see above) but does have a stiff challenge right in front of him. After seeing what Edgar did to Mendes, putting him away in two minutes, and considering the wrestling threat the Jersey boy poses, UFC matchmakers ought not put McGregor in with current lightweight champ Dos Anjos. They should give him the ex-champ.

• MORE MMA: UFC Year in Review: The 10 best fights from 2015

Bantamweight

1. T.J. Dillashaw (12-2)
2. Dominick Cruz (20-1)
3. RenanBarão (33-3, 1 NC)
4. Urijah Faber (32-8)
5. Raphael Assunção (23-4)
6. Aljamain Sterling (12-0)
7. Thomas Almeida (20-0)
8. BibianioFernandes (16-3)
9. Marcos Galvão (17-6-1)
10. Joe Warren (12-4)

Finally “The Dominator” returns Jan. 17, fighting for the first time in 16 months and just the second time in four years plus, challenging Dillashaw for the belt he wore long ago and lost not to defeat but to injury. If Cruz is anywhere close to what he once was, this showdown will get the heart pumping.

• MORE MMA: McGregor emerges as UFC's biggest star in win over Aldo

Flyweight

1. Demetrious Johnson (23-2-1)
2. Joseph Benavidez (22-4)
3. John Dodson (17-7)
4. Henry Cejudo (10-0)
5. Ali Bagautinov (13-4)
6. Jussierda Silva (18-4)
7. Zach Makovsky (19-6)
8. John Moraga (16-4)
9. KyojiHoriguchi (15-2)
10. Ian McCall (13-5-1)

Who can challenge “Mighty Mouse”? Benavidez and Dodson are nowhere men, both having lost twice to Johnson. (Dodson, knowing his lot in life, is moving to bantamweight.) That leaves Cejudo, the golden boy. Is it too soon in his MMA career—10 fights, four in the UFC, in less than three years—for the 2008 Olympic wrestling gold medalist to fight the champ? Maybe. But he appears to be next in line, so he’d better be ready.

• MORE MMA: Arlovski on Miocic, UFC 195 and his return to title contention

Women’s Bantamweight

1. Holly Holm (10-0)
2. Ronda Rousey (12-1)
3. Cat Zingano (9-1)
4. Miesha Tate (17-5)
5. Alexis Davis (17-6)
6. Amanda Nunes (11-4)
7. JuliannaPeña (7-2)
8. Valentina Shevchenko (12-1)
9. Tonya Evinger (17-5)
10. Sara McMann (8-3)

The division seems so open-ended with Rousey no longer at the top. And with reports indicating that Holm’s first defense might not be a rematch with “Rowdy Ronda” but might instead be against Tate, so many possibilities are swirling around.

• MORE MMA: Holm signs extension with UFC, allowing for Rousey rematch

Women’s Strawweight

1. Joanna Jedrzejczyk (11-0)
2. Claudia Gadelha (13-1)
3. Jessica Aguilar (19-5)
4. Carla Esparza (10-3)
5. Rose Namajunas (4-2)
6. KarolinaKowalkiewicz (8-0)
7. Valerie Letourneau (8-4)
8. Joanne Calderwood (9-1)
9. Tecia Torres (7-0)
10. MarynaMoroz (6-1)

Namajunas was impressive in her derailing of the Paige VanZant hype train last month, looking so much better than she had in her fight with Esparza for the title a little over a year ago. She has time to refine her game even more, as Jedrzejczyk likely will next put her belt on the line against Gadelha.