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defeats Kenny Florian at UFC 64 (10/14/06) to win the vacant UFC lightweight title
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defeats Joe Stevenson in the second round at UFC 80 (1/19/08) to win the vacant UFC crown
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defeats BJ Penn via unanimous decision at UFC 112 (4/10/10) to win the UFC crown
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defeats Frankie Edgar via unanimous decision at UFC 144 (2/26/12) to win the UFC crown
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Pettis defeats Benson Henderson via submission at UFC 164 (8/31/13) to win the UFC crown
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defeats Anthony Pettis via unanimous decision at UFC 185 (3/14/15) to win the UFC crown
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defeats Rafael Dos Anjos via first-round TKO on 7/7/16 to win UFC crown.
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defeats Eddie Alvarez via second round KO at UFC 205 (11/12/16) to win UFC crown.
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defeats Al Iaquinta via unanimous decision at UFC 223 (4/7/18) to win the vacant UFC lightweight title
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defeats Michael Chandler via first-round TKO on 5/15/21 to win UFC crown.