Unified featherweight champion Conor McGregor points to the crowd after his stunning, 13-second knockout of Jose Aldo.
A star is born
Conor McGregor backed up every word he spoke in the buildup to UFC 194 with a star-making performance.
Jose Aldo, Conor McGregor
UFC featherweight champion Jose Aldo (black trunks) and UFC interim featherweight champion Conor McGregor (green trunks) battle during their featherweight bout at UFC 194 at the MGM Grand Garden Arena.
Ready to strike
Jose Aldo, right, and Conor McGregor were set to release power shots in the center of the Octagon seconds after the start of the UFC featherweight title unification bout.
Fast and furious
Conor McGregor's left cross to the nose of Jose Aldo produced the fastest knockout in UFC title history.
Hitting the target
Jose Aldo follows through on a left hook to the face of Conor McGregor after eating a devastating left hand that knocked out the long-reigning champion.
The calm before the storm
Interim featherweight champion Conor McGregor poses for the camera during introductions before his UFC 194 title unification fight against Jose Aldo.
Room with a view
UFC fans packed the MGM Grand Garden Arena in Las Vegas in anticipation of the action at UFC 194.
A closer look
A cageside doctor inspects the bruised face of Chris Weidman before the start of Round 4 after Luke Rockhold nearly stopped him the previous round.
Luke Rockhold controls Chris Weidman with a guillotine choke and sneaks a look at the clock to see how much time is remaining in Round 1.
Up and over
Challenger Luke Rockhold turns UFC champion Chris Weidman over to slam him down during their middleweight title bout at UFC 194.
Ground and pound
Yoel Romero unloads a left-handed strike to the head of Ronaldo Souza from top position during their middleweight bout.
Yoel Romero, left, defends a kick to the body from Ronaldo Souza at UFC 194.
Demian Maia, right, glances at the clock along with opponent Gunnar Nelson during their welterweight bout.
Grappling for control
Gunnar Nelson gains top position as Demian Maia controls from the bottom with a body lock.
Gunnar Nelson, left, applies a guillotine choke as Demian Maia grabs his leg. Maia went on to win by decision after three rounds.
Straight to the head
Max Holloway connects a powerful right hand to the head of Jeremy Stephens. Holloway has won eight consecutive fights since his loss to Conor McGregor in 2013.
Keep the distance
Featherweight Max Holloway, left, avoids a kick from Jeremy Stephens, who couldn't do much against Holloway's speed.
All tied up
Frankie Saenz tried different things against Urijah Faber, but nothing seemed to work on the three-time UFC bantamweight title challenger.
Urijah "The California Kid" Faber had a thought test against Frankie Saenz but was able to secure a unanimous decision victory.
Strawweight contender Tecia Torres, top, punished Jocelyn Jones-Lybarger for three rounds on her way to a unanimous decision victory.
Welterweight Warlley Alves celebrates his impressive victory via guillotine choke of Colby Covington at UFC 194.
Talk to the hand
Leonardo Santos of Brazil punches Kevin Lee in the face during their lightweight bout.
Leonardo Santos, Kevin Lee
Leonardo Santos, left, connects a left hand on Kevin Lee before finishing him by TKO in Round 1 at UFC 194.
Frankie Edgar poses with Irish fans in the lobby of the MGM Grand on his walk to his hotel room after his first-round win over Chad Mendes at The Ultimate Fighter 22 finale at the Chelsea at The Cosmopolitan.