After winning the Danish National Amateur Championship in 2000, and his 2nd NordicAmateur Championship, and lots of international amateur experience, Kaddour turned pro. Kaddour started his career in Europe, fighting in Denmark, Wales, Hungary, Finland, Italy and Germany including a fight against Alessio Furlan at Braunschweig, Germany. The fight went the full distance with Kaddour winning narrowly on points to inflict Furlan with the first defeat of his professional career. Soon after Kaddour moved to the United States to further his career.
USA and ''The Contender'' Series
In 2003–2004, Kaddour fought 4 out of 5 fights in the USA, the other in Germany, against opponents with winning records and won 3 of the 4 USA fights by stoppage, and was very confident at 18-0 when selected to participate on the reality TV showThe Contender, broadcast worldwide, and was placed on the East Coast team. While on the team, he got involved in a feud with Ishe Smith early on and they fought in the 3rd match. At the time Smith was world ranked by all 4 sanctioning organizations and held the USBA, the NABO, and the WBC Continental Americas titles. Kaddour gunned for an early KO but Smith weathered the storm and won by unanimous decision, calling it a "tough fight" afterwards. Kaddour was voted back into the quarterfinals after Juan de la Rosa pulled out – a tactic by Jesse Brinkley, Anthony Bonsante, Peter Manfredo, and Joey Gilbert designed to get under Smith's skin. The week after Smith lost a split decision to eventual Contender and WBC champion Sergio Mora, Ahmad was matched with Alfonso Gomez by the same boxers who brought Kaddour back, with the hope that the two tough fighters would battle hard and the winner would be less ready for the semi-finals. Kaddour beat Gomez's face badly and came away relatively unscathed himself, even knocking Gomez backwards in the 4th, and buckling Gomez's legs and sending him 3 steps back into the ropes in the last round, but Gomez was busier overall and Kaddour lost by 1 round on 1 card and 3 rounds on the other 2 cards. Kaddour claimed that he would be back and wished Alfonso the best. The first of the Contender contestants to fight again after the show's finale, Kaddour dominated through an 8-round unanimous decision against Maxell Taylor on July 22, 2005, on Showtime's . Months later he fought Jesus Felipe Valverde to a draw due to a recurring stamina problem. Two of the judges scored the fight even and the third had Kaddour winning by two rounds. Two months after this, in November 2006, Ahmad had a rematch against Valverde, which he won by split decision on Versus. Valverde, who had gone the distance with future world titlists Carlos Quintana, Kermit Cintrón, and Yuri Foreman, as well as other top competition, was the busier fighter, but Kaddour was the more effective puncher. After the fight during an on camera interview when asked about his stamina in the final rounds, Kaddour explained that he had to drop weight from 192 lbs to 148 lbs, and that he had been born premature which might effect one of his lungs, and the combination may have taken away from his work rate. Ahmad's fiancé on the Contender series was Brandy Collins, an American who sponsored him for a fiancé visa. They were married after the Contender and had a son in 2006. Brandy later told him to leave their home in Houston. According to BoxingScene.com and a Houston Tribune article, Ahmad entered the home without her permission in June 2007 and was charged with burglary. He pleaded guilty to Class A Misdemeanor trespassing and was sentenced to 180 days in Harris County Jail in downtown Houston and Brandy withdrew her sponsorship of him with the INS, causing Kaddour to be transferred to immigration agents and deported to Denmark upon his release from federal custody in December 2007, and Collins obtained a divorce. Kaddour also reportedly had problems breathing through his nose and had surgery.
The Comeback
After an almost 3-year hiatus from boxing working a steady job, Kaddour appeared on the undercard of Danish Super middleweight Mikkel Kessler's defense of the WBA title at the Messecenter Herning, Denmark, September 12, 2009, winning a unanimous decision over the tough German, Mike Ermis. He returned to the United States and beat Jerome Ellis by unanimous decision on March 26, 2010, then back to Denmark, where on February 11, 2011, he beat Lee Noble on Denmark's TV2 "Fight Night". Kaddour trained with Greg Coverson at the "Detroit Boxing Jungle" before scoring a 5th-round TKO over Vance Garvey at the Motor City Casino on October 6. His next 3 fights were for Sauerland Events on Viasat's Nordic Fight Night series, with 2012 decisions over Britain's Gary Boulden and Max Maxwell and a September 2013 unanimous decision over Estonia's Aleksei Tsatiasvili. He is back training in Brian Mathiasen's gym, where he was guided through the early part of his pro career, and Mathiasen said his primary focus is getting Kaddour in the best physical condition of his career, as conditioning has consistently been Kaddour's biggest challenge.
Future Plans
In August 2012 World Boxing News spoke with both Ishe Smith and Alfonso Gomez about possible rematches with Kaddour, giving him the opportunity to avenge his only 2 losses. Smith ruled a rematch out in the immediate future as he was still trying to attain his first world title shot through Golden Boy Promotions, but Gomez expressed interest and promised to "beat him worse this time". February 2013, Kaddour stated he holds no ill will toward Smith from their Contender days despite the taunting that led to their old rivalry, but he still very much wants a rematch with Smith. In August 2013, Smith said "Beating Ahmed was right up there" with his best fights before winning the IBF title.
