A veteran of the sport for over three decades, he is best known for winning the WBC heavyweight title in 1994 by scoring an upset knockout victory over Lennox Lewis.

Lewis dropped to the canvas and got up before the count of ten, but he was unsteady on his feet, forcing the referee to wave a stop to the fight.

"[6] McCall's win over Lewis marked Don King's return to power in the heavyweight division, since none of his stable of fighters had been able to win the heavyweight title since Mike Tyson lost it in 1990 (McCall worked as a sparring partner with Tyson and Cooper, and claimed Cooper is the harder puncher.

[7]) He successfully defended the title in a bout against 45-year-old ex-champ Larry Holmes in Las Vegas winning 114–113, 115–114, and 115–112 on the score cards, before returning to London to face Frank Bruno in 1995.

[citation needed] McCall returned to the ring 6 months after losing his title when he beat future WBC heavyweight champion Oleg Maskaev in less than 3 minutes.

[8] The referee for the fight, Mills Lane, stated in an interview after the match, "In the third round, he got in close, and then seemed frustrated, and then he just backed off and put his arms down.

[citation needed] In 2001 at the age of 36 he resurrected his career with a tenth-round knockout of Henry Akinwande, at the time one of the most avoided contenders in the world, on a Lennox Lewis undercard in Las Vegas.

[citation needed] In December 2004 he lost a close points decision to fellow contender DaVarryl Williamson on a high-profile Don King undercard from New York, and in 2005 he traveled to Germany for an eliminator to skillful and well regarded Cuban Juan Carlos Gomez, and was outpointed over ten rounds.

[citation needed] McCall defeated Darroll Wilson in a fourth-round TKO in Louisville, Kentucky, on September 9, 2006, for the WBC Fecarbox Championship.

[citation needed] On 16 June 2007, McCall defeated Sinan Samil Sam for the WBC International Heavyweight Championship by unanimous decision in Ankara, Turkey.

The long inactive McCall defeated Australian John Hopoate by 2nd-round TKO on the May 22, 2009, for the vacant IBA intercontinental heavyweight belt.

[citation needed] He defended his IBA continental belt against Franklin Lawrence by a ten-round unanimous decision on August 21, 2009, at the Orleans Hotel & Casino, Las Vegas.

[citation needed] On October 23, 2009, he defended his IBA continental title again by a ten-round unanimous decision against 6'8" Lance Whitaker.

[10] Police officers informed the media that McCall had in his possession a glass pipe and a five-dollar bill containing a small amount of cocaine.

represented McCall and was able to have him reinstated on his previous probationary term, modified to include drug and psychological evaluation followed by any necessary treatment.