American Top Team coach Mike Brown expects Dustin Poirier to leave the UFC 269 headliner against Charles Oliveira as undisputed lightweight champion. Poirier (28-6 MMA, 20-5 UFC) will attempt to dethrone Oliveira (31-8 MMA, 19-8 UFC) of the belt when they meet in the Dec. 11 main event at T-Mobile Arena in Las Vegas
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