UFC 194 hosts MMA's biggest stars as Jose Aldo and Conor McGregor fight to unify their featherweight belts, while Long Island's Chris Weidman defends his middleweight title against Luke Rockhold.

Credit: Jeffrey Basinger

Conor McGregor defeated Jose Aldo in 13 seconds of the first round for the featherweight title at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Conor McGregor defeated Jose Aldo in 13 seconds of the first round for the featherweight title at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Conor McGregor defeated Jose Aldo in 13 seconds of the first round for the featherweight title at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Conor McGregor defeated Jose Aldo in 13 seconds of the first round for the featherweight title at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Conor McGregor defeated Jose Aldo in 13 seconds of the first round for the featherweight title at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Conor McGregor defeated Jose Aldo in 13 seconds of the first round for the featherweight title at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Newsday/Jeffrey Basinger

Conor McGregor defeated Jose Aldo in 13 seconds of the first round for the featherweight title at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Conor McGregor defeated Jose Aldo in 13 seconds of the first round for the featherweight title at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Newsday/Jeffrey Basinger

Conor McGregor defeated Jose Aldo in 13 seconds of the first round for the featherweight title at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Conor McGregor defeated Jose Aldo in 13 seconds of the first round for the featherweight title at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Luke Rockhold defeated Chris Weidman by TKO in the third round for the middleweight title at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Luke Rockhold defeated Chris Weidman by TKO in the third round for the middleweight title at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Luke Rockhold defeated Chris Weidman by TKO in the third round for the middleweight title at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Luke Rockhold defeated Chris Weidman by TKO in the third round for the middleweight title at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Luke Rockhold defeated Chris Weidman by TKO in the third round for the middleweight title at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Luke Rockhold defeated Chris Weidman by TKO in the third round for the middleweight title at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Luke Rockhold defeated Chris Weidman by TKO in the third round for the middleweight title at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Newsday/Jeffrey Basinger

Conor McGregor celebrates his 13-second knockout of Jose Aldo to win the UFC featherweight title at UFC 194 in Las Vegas on Dec. 12, 2015.

Credit: Newsday/Jeffrey Basinger

Conor McGregor celebrates his 13-second knockout of Jose Aldo to win the UFC featherweight title at UFC 194 in Las Vegas on Dec. 12, 2015.

Credit: Newsday/Jeffrey Basinger

Conor McGregor celebrates his 13-second knockout of Jose Aldo to win the UFC featherweight title at UFC 194 in Las Vegas on Dec. 12, 2015.

Credit: Newsday/Jeffrey Basinger

Conor McGregor celebrates his 13-second knockout of Jose Aldo to win the UFC featherweight title at UFC 194 in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Welterweight Demian Maia defeated Gunnar Nelson by unanimous decision at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Featherweight Max Holloway defeated Jeremy Stephens by unanimous decision at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Featherweight Max Holloway defeated Jeremy Stephens by unanimous decision at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Featherweight Max Holloway defeated Jeremy Stephens by unanimous decision at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Featherweight Max Holloway defeated Jeremy Stephens by unanimous decision at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Featherweight Max Holloway defeated Jeremy Stephens by unanimous decision at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Featherweight Max Holloway defeated Jeremy Stephens by unanimous decision at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Featherweight Max Holloway defeated Jeremy Stephens by unanimous decision at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Featherweight Max Holloway defeated Jeremy Stephens by unanimous decision at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Bantamweight Urijah Faber defeated Frankie Saenz by unanimous decision at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Bantamweight Urijah Faber defeated Frankie Saenz by unanimous decision at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Bantamweight Urijah Faber defeated Frankie Saenz by unanimous decision at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Bantamweight Urijah Faber defeated Frankie Saenz by unanimous decision at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Bantamweight Urijah Faber defeated Frankie Saenz by unanimous decision at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Bantamweight Urijah Faber defeated Frankie Saenz by unanimous decision at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Strawweight Tecia Torres defeated Jocelyn Jones-Lybarger by unanimous decision at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Strawweight Tecia Torres defeated Jocelyn Jones-Lybarger by unanimous decision at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Strawweight Tecia Torres defeated Jocelyn Jones-Lybarger by unanimous decision at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Strawweight Tecia Torres defeated Jocelyn Jones-Lybarger by unanimous decision at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Strawweight Tecia Torres defeated Jocelyn Jones-Lybarger by unanimous decision at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Strawweight Tecia Torres defeated Jocelyn Jones-Lybarger by unanimous decision at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Strawweight Tecia Torres defeated Jocelyn Jones-Lybarger by unanimous decision at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Strawweight Tecia Torres defeated Jocelyn Jones-Lybarger by unanimous decision at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Welterweight Warlley Alves defeated Colby Covington in the first round at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Welterweight Warlley Alves defeated Colby Covington in the first round at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Welterweight Warlley Alves defeated Colby Covington in the first round at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Welterweight Warlley Alves defeated Colby Covington in the first round at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Welterweight Warlley Alves defeated Colby Covington in the first round at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Welterweight Warlley Alves defeated Colby Covington in the first round at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Welterweight Warlley Alves defeated Colby Covington in the first round at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Welterweight Warlley Alves defeated Colby Covington in the first round at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Lightweight Leonardo Santos defeated Kevin Lee by TKO in the first round at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Lightweight Leonardo Santos defeated Kevin Lee by TKO in the first round at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Lightweight Leonardo Santos defeated Kevin Lee by TKO in the first round at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Lightweight Leonardo Santos defeated Kevin Lee by TKO in the first round at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Lightweight Leonardo Santos defeated Kevin Lee by TKO in the first round at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Lightweight Leonardo Santos defeated Kevin Lee by TKO in the first round at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Lightweight Magomed Mustafaev defeated Joe Proctor by TKO in the first round at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Lightweight Magomed Mustafaev defeated Joe Proctor by TKO in the first round at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Lightweight Magomed Mustafaev defeated Joe Proctor by TKO in the first round at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Lightweight Magomed Mustafaev defeated Joe Proctor by TKO in the first round at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Lightweight Yancy Medeiros defeated John Makdessi by split decision at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Welterweight Court McGee defeated Marcio Alexandre Jr. by unanimous decision at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Lightweight Yancy Medeiros defeated John Makdessi by split decision at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Lightweight Yancy Medeiros defeated John Makdessi by split decision at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Welterweight Court McGee defeated Marcio Alexandre Jr. by unanimous decision at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Lightweight Yancy Medeiros defeated John Makdessi by split decision at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Welterweight Court McGee defeated Marcio Alexandre Jr. by unanimous decision at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Welterweight Court McGee defeated Marcio Alexandre Jr. by unanimous decision at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Welterweight Court McGee defeated Marcio Alexandre Jr. by unanimous decision at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Lightweight Yancy Medeiros defeated John Makdessi by split decision at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Welterweight Court McGee defeated Marcio Alexandre Jr. by unanimous decision at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

Credit: Jeffrey Basinger

Welterweight Court McGee defeated Marcio Alexandre Jr. by unanimous decision at UFC 194 in the MGM Grand Garden Arena in Las Vegas on Dec. 12, 2015.

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