He made his TV debut on ESPN July 19, 2013, when he beat Aaron Kinch by a fourth-round TKO.

[8] On April 16, 2014 Martin won the vacant WBO–NABO heavyweight title by beating former undefeated boxer Alexander Flores by KO in the 4th round.

[9] In July 2014, Martin successfully defended the title for the first time at BB King Blues Club & Grill in New York against 37-year-old veteran Kertson Manswell.

Martin won via the third knockdown rule, knocking Manswell down three times in round 3, forcing the stoppage.

[12] After a six-month gap, Martin returned to fight Damon McCreary (15–3, 11 KOs) in a non-title six-round bout.

Martin made a defence of the title on February 28, 2015 against former Brazilian heavyweight champion Raphael Zumbano Love (35–9–1, 28 KOs) at the Celebrity Theater in Phoenix, Arizona.

[13] Martin's next defence came on April 25, on the undercard of Klitschko-Jennings at the Madison Square Garden in Manhattan, New York against British boxer Tom Dallas.

[14] The fight lasted one round as Dallas was knocked out by a straight left hand to the head from Martin.

[15][16] Martin made his fourth and final defence of his WBO–NABO title on September 25 at the Legacy Arena in Birmingham, Alabama against Mexican WBO latino heavyweight champion Vicente Sandez (15–4, 10 KOs) in a scheduled 10-round fight.

The IBF then ordered Glazkov to fight Martin for a vacant world title on January 16 at Barclays Center in Brooklyn, New York.

Referee Earl Brown ruled it a slip, but Glazkov appeared to hurt his right knee following the fall.

When the fight resumed, Glazkov threw a right body hook but was hit by Martins left jab and went down again after losing his balance.

The three names were former world title challengers Chris Arreola, Artur Szpilka and rising contender Dominic Breazeale.

[22] Martin chose to make the first defence of his title against rising British star and 2012 Olympic gold medalist Anthony Joshua at The O2 Arena in London on 9 April 2016.

[31] Martin continued his comeback trail on July 18 at the Rapides Coliseum in Alexandria, Louisiana against 31-year-old journeyman Michael Marrone (21–7, 15 KOs).

[33][34] In July 2018, Showtime announced it was planning an event to take place on September 8, headlined by Danny García vs. Shawn Porter for the vacant WBC welterweight title.

It was rumoured that Martin would challenge Polish rising contender Adam Kownacki (17-0, 14 KO) on the undercard.

[36] Martin started the fight slow, being forced to box on the back foot, allowing Kownacki to take a lead on the scorecards.

[46] In the early hours of August 5, 2016, it was reported by Sky Sports that Martin had been shot in Los Angeles.