With a hard left, Chris Weidman went from an up-and-coming fighter to maybe the next big thing in mixed martial arts. Weidman watched as former UFC middleweight champion Anderson Silva bobbed, weaved and clowned around in the UFC 162 octagon. Then it happened -- the punch that put an end to Silva's undefeated record in UFC matches and dethroned him from atop the Pound-for-Pound rankings. Our experts have Jon Jones atop the new rankings, with Silva fourth and a previously unranked Weidman fifth. Do you agree with the new rankings? Click the photos below to have your say.

Pound-for-pound MMA fighters

Jose Aldo

Jose Aldo

Featherweight
22-1-0
P4P ranking: 3

Renan Barao

Renan Barao

Bantamweight
30-1-0
P4P ranking: 9

Benson Henderson

Benson Henderson

Lightweight
19-2-0
P4P ranking: 6

Demetrious Johnson

Demetrious Johnson

Flyweight
17-2-1
P4P ranking: 8

Jon Jones

Jon Jones

Light Heavyweight
18-1-0
P4P ranking: 1

Gilbert Melendez

Gilbert Melendez

Lightweight
21-3-0
P4P ranking: 10

Anderson Silva

Anderson Silva

Middleweight
33-5-0
P4P ranking: 4

Georges St-Pierre

Georges St-Pierre

Welterweight
24-2-0
P4P ranking: 2

Chris Weidman

Chris Weidman

Middleweight
10-0-0
P4P ranking: 5

Cain Velasquez

Cain Velasquez

Heavyweight
12-1-0
P4P ranking: 7

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