The event, which features a featherweight championship headliner between champ Jose Aldo and Chad Mendes, takes place in Brazil at Rio de Janeiro's HSBC Arena. Facebook and FX carry the prelims, and the main card airs on pay-per-view.
Official results beginning at approximately 7:30 p.m. ET (4:30 p.m. PT) for the preliminary card and 10 p.m. ET for the main card.
In addition to the main event, UFC 142 features Anthony Johnson's middleweight (Light Heavyweight) debut in a bout with Vitor Belfort, and middleweight contender Rousimar Palhares takes on Mike Massenzio. PRELIMINARY CARD (FACEBOOK)Featherweight bout: Felipe Arantes vs. Antonio Carvalho
- Arantes defeated Carvalho via unanimous decision (29-28, 29-28, 29-28) PRELIMINARY CARD (FX)Welterweight bout: Ricardo Funch vs. Mike Pyle
- Pyle defeated Funch via TKO (knee and punches) at 1:22 of round 1Featherweight bout: Yuri Alcantara vs. Michihiro Omigawa
- Alcantara defeated Omigawa via unanimous decision (30-27, 29-28, 30-27)Heavyweight bout: Gabriel Gonzaga vs. Ednaldo Oliveira
- Gonzaga defeated Oliveira via submission (rear-naked choke) at of 3:22 round 1Lightweight bout: Thiago Tavares vs. Sam Stout
- Tavares defeated Stout via unanimous decision (29-28, 29-28, 29-28) MAIN CARDLightweight bout: Edson Barboza vs. Terry Etim
- Barboza defeats Etim via KO (spinning heel kick) at 2:02 of round 3Welterweight bout: Erick Silva vs. Carlo Prater
- Prater defeated Silva via Disqualification (illegal blows to back of head) at 0:29 of round 1Middleweight bout: Rousimar Palhares vs. Mike Massenzio
- Palhares defeated Massenzio via submission (heel hook) at 1:03 of round 1 Catchweight (197 lb) bout: Vitor Belfort vs. Anthony Johnson
- Belfort defeated Johnson via submission (rear-naked choke) at 4:49 of round 1 MAIN EVENTFeatherweight Championship: José Aldo (c) vs. Chad Mendes
- Aldo defeated Mendes via TKO (kick and punches) at 4:59 of round 1 to retain the Featherweight title