UFC 183: Silva vs. Diaz took place on January 31, 2015 at the MGM Grand Garden Arena in Las Vegas, Nevada.
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MAIN CARD (Pay-per-view, 10:00 PM ET)
• Anderson Silva vs. Nick Diaz: Anderson Silva def. Nick Diaz via unanimous decision (49-46, 50-45, 50-45).
• Kelvin Gastelum vs. Tyron Woodley: Tyron Woodley def. Kelvin Gastelum via split decision (29-28, 28-29, 30-27).
• Joe Lauzon vs. Al Iaquinta: Al Iaquinta def. Joe Lauzon via TKO (strikes) at 3:34 of Round 2.
• Thales Leites vs. Tim Boetsch: Thales Leites def. Tim Boetsch via submission (arm-triangle choke) at 3:45 of Round 2.
• Jordan Mein vs. Thiago Alves: Thiago Alves def. Jordan Mein via TKO (strikes) at 0:39 of Round 2.
PRELIMINARY CARD (FOX Sports 1, 8:00 PM ET)
• Miesha Tate vs. Sara McMann: Miesha Tate def. Sara McMann via majority decision (29-28, 29-27, 28-28).
• Derek Brunson vs. Ed Herman: Derek Brunson def. Ed Herman via TKO (strikes) at 0:36 of Round 1.
• John Lineker vs. Ian McCall: John Lineker def. Ian McCall via unanimous decision (29-28, 29-28, 29-28).
• Rafael Natal vs. Tom Watson: Rafael Natal def. Tom Watson via unanimous decision (30-27, 30-27, 30-26).
PRELIMINARY CARD (UFC Fight Pass, 7:00 PM ET)
• Ildemar Alcantara vs. Richardson Moreira: Ildemar Alcantara def. Richardson Moreira via split decision (29-28, 28-29, 29-28).
• Thiago Santos vs. Andy Enz: Thiago Santos def. Andy Enz via TKO (strikes) at 1:56 of Round 1.
