Photos:: UFC 183: Anderson Silva vs. Nick Diaz

Nick Diaz and Anderson Silva grapple along the octagon during their middleweight bout at UFC 183.  (Steve Marcus / Getty Images)

Nick Diaz gathers himself in the octagon after taking a hit from Anderson Silva during UFC 183.  (Steve Marcus / Getty Images)

Anderson Silva lands a kick against Nick Diaz during their middleweight fight at UFC 183.  (Steve Marcus / Getty Images)

Nick Diaz, left, and Anderson Silva trade punches in their middleweight bout at the MGM Grand Garden Arena in Las Vegas.  (Steve Marcus / Getty Images)

Anderson Silva lands a kick against Nick Diaz during their middleweight fight at UFC 183 on Saturday night in Las Vegas.  (Steve Marcus / Getty Images)

Anderson Silva exits Las Vegas’ MGM Grand Garden Arena after a successful comeback against Nick Diaz at UFC 183 on Jan. 31.  (Steve Marcus / Getty Images)

Anderson Silva celebrates with team members after defeating Nick Diaz in a five-round middleweight bout at UFC 183.  (Steve Marcus / Getty Images)

Tyron Woodley raises his arms after the third round of his welterweight bout against Kelvin Gastelum at UFC 183 on Saturday night in Las Vegas. Woodley won by split decision.  (Steve Marcus / Getty Images)

Al Iaquinta kicks Joe Lauzon during their lightweight fight at UFC 183 on Saturday night in Las Vegas.  (Steve Marcus / Getty Images)

Al Iaquinta celebrates after defeating Joe Lauzon by technical knockout in the second round of their lightweight bout at UFC 183.  (Steve Marcus / Getty Images)

Thales Leites works over Tim Boetsch from the top position during their middleweight bout at UFC 183 on Saturday night at the MGM Grand in Las Vegas.  (Steve Marcus / Getty Images)

The referee checks on Tim Boetsch after he lost by submission to Thales Leites, left, in a middleweight bout at UFC 183.  (Steve Marcus / Getty Images)

Jordan Mein connects with a left against Thiago Alves during their welterweight fight at UFC 183.  (Steve Marcus / Getty Images)

Thiago Alves celebrates after defeating Jordan Mein by technical knockout in the second round of their welterweight fight at UFC 183 in Las Vegas.  (Steve Marcus / Getty Images)

Thiago Alves is given a ride on the shoulders of a team member after his victory over Jordan Mein at UFC 183.  (Steve Marcus / Getty Images)

Sara McMann lands a punch against Miesha Tate during their bantamweight bout at UFC 183 on Saturday night at the MGM Grand Garden Arena in Las Vegas.  (Steve Marcus / Getty Images)

Miesha Tate has the top position as she grapples with Sara McMann during their bantamweight fight at UFC 183.  (Steve Marcus / Getty Images)

Miesha Tate lands a left against Sara McMann during their bantamweight bout at UFC 183.  (Steve Marcus / Getty Images)

Miesha Tate is declared the winner by majority decision over Sara McMann after their bantamweight bout at UFC 183.  (Steve Marcus / Getty Images)

Derek Brunson, left, and Ed Herman trade punches during their middleweight bout at UFC 183 on Saturday night in Las Vegas.  (Steve Marcus / Getty Images)

Derek Brunson celebrates his first-round technical knockout of Ed Herman at UFC 183.  (Steve Marcus / Getty Images)

Ian McCall drops to his knees as he’s awarded a unanimous-decision victory over John Lineker after their flyweight fight at UFC 183.  (Steve Marcus / Getty Images)

Rafael Natal, left, trades punches with Tom Watson during their middleweight bout at UFC 183.  (Steve Marcus / Getty Images)

Rafael Natal reacts as he is awarded a unanimous decision over Tom Watson after their middleweight bout at UFC 183 on Saturday night at MGM Grand Garden Arena.  (Steve Marcus / Getty Images)

Ildemar Alcantara connects to the face of Richard Moreira in a middleweight fight at UFC 183.  (Steve Marcus / Getty Images)

Ildemar Alcantara delivers a kick against Richard Moreira during their middleweight bout at UFC 183.  (Steve Marcus / Getty Images)

Thiago Santos (background) celebrates after defeating Andy Enz by technical knockout in the first round of their middleweight fight at UFC 183.  (Steve Marcus / Getty Images)

Thiago Santos lands a punch to the body of Andy Enz during their middleweight bout at UFC 183.  (Steve Marcus / Getty Images)