He lost his world middleweight title owing to injuries sustained from the car accident, being stripped of the belt for failure to defend it.

In 2013 Simon won the vacant IBF International Light Heavyweight title against Geard Ajetović, and defended it against him again in 2014.

His result was: Simon turned pro in 1994 and won the WBO junior middleweight title in 1998 by defeating Winky Wright by controversial decision.

He defended the title four times against Kevin Lueshing, Enrique Areco, Rodney Jones and Wayne Alexander.

On 5 August 2005, Simon was given a two-year jail sentence, after he was found guilty of culpable homicide stemming from the November 2002 car accident, which resulted in the deaths of the three people.

[5] On 9 July 2007, Simon began serving his two-year prison sentence for culpable homicide after losing the appeal of his 2005 conviction.