Amir Mansour (born Lavern Moorer; July 25, 1972) is an American professional boxer who fights at heavyweight.

At the age of 38, in his first fight since 2001, Mansour returned to the boxing ring to defeat 36-year-old Samuel Brown by knockout.

In May 2011, Mansour claimed the vacant World Boxing Foundation Intercontinental heavyweight title, knocking out Kenyan boxer Raymond Ochieng 1 minute and 45 seconds into the first round.

While in the ring Mansour started his path to a becoming a world champion, resumed his boxing career on January 25, 2013, at the Dover Downs Hotel & Casino, where he faced Dominique Alexander.

He defended his WBF Intercontinental and also won the vacant USBA and interim NABA Heavyweight titles.

Rather than scoring the early knockout, a feat that he had grown used to, Mansour treated Price like a stubborn stump that required several hundred whacks before eventually going down.

[10] Mansour's first fight of 2014 was a huge step-up in class, defending his USBA title against veteran Steve Cunningham (26-6-0, 12 KOs).

The fight was announced in February, to take place on April 4 at the Liacouras Center on the campus of Temple University in Philadelphia.

Kathy Duva stated she was looking forward to the fight as it was a true evenly matched crossroads bout.

[15] After losing the fight, Mansour immediately spoke to the press and instead of complaining about the judgement, he talked about his opponent's (Cunningham) young daughter who needed a heart transplant.

[17] In round 7, Mansour saw an opening and hit a counter right hook that put Kassi face first to the canvas, knocked out, ending the fight by knockout.

[18] Mansour took six months out after knocking out Kassi and next fought in May 2015 in the main event of an ESPN Friday Night Fights card at the 2300 Arena, which was a sell out.

The fight went the full ten rounds in what was described as a 'tactical battle of punchers', as Mansour won after the three judges scored it (96-94, 98-92, 97-93).

Washington had his best win to date in March 2015 when he beat longtime veteran Jason Gavern in a 10-round decision victory.

The fight was scheduled to take place on Premier Boxing Champions on Fox Sports 1 from the Little Creek Casino Resort, in Shelton, Washington.

[21][22] On December 29, 2015, Premier Boxing Champions announced that Mansour would Dominic Breazeale (16-0, 14 KOs) at the Staples Center in Los Angeles on January 23, 2016 on the undercard of Danny Garcia vs. Robert Guerrero, who would battle it out for the vacant WBC welterweight title.

Breazeale had lost his mother Tina a few weeks before the fight on New Year's Eve due to a heart-attack.

Mansour had bit his tongue nearly in half in the second round and had trouble breathing through his nose and mouth as he entered the bout with a cold.

[25] In what started off as social media banter, a fight was confirmed between Mansour and 31-year-old American boxer Travis Kauffman (31–1, 23 KOs) to take place on February 25, 2017 on the undercard of WBC heavyweight champion Deontay Wilder's title defense against Gerald Washington at the Legacy Arena in Birmingham, Alabama.

[29] In July 2017, Mansour spoke out about not being able to get a good name opponent and a world title fight, "You’d think I have the plague, the way the other so-called heavyweight contenders are avoiding me.

His manager received a phone call initially about a potential fight but when Mansour landed the #15 slot with the WBC and WBO, there was no further communication from Povetkin's team.

I also was willing to step in on one week’s notice to fight Fres Oquendo for the WBA title in June when Shannon Briggs failed his test.

[30] On October 30, Mansour announced that he had hired Ivaylo Gotzev, a veteran boxing advisor and agent, who he'd hoped to help him land big fights.

Kuzmin, known for his amateur background, having beat the likes of Joe Joyce, Roberto Cammarelle and Ivan Dychko.

[37] Hrgović delivered a performance to claim the WBC International title with a third-round knockout win over Mansour.

Mansour was knocked down again by a flurry of punches from Hrgović and counted out by referee Daniel Van De Wiele with 51 seconds of the round remaining.

The undercard was also announced, with Mansour returning to the ring to take on Nigerian rising prospect Efe Ajagba (8-0, 7 KOs) in an 8-round bout on FOX.

[40] Ajagba spoke of his confidence on taking on and defeating Mansour inside the distance and was looking to make a statement.