5 times Belgian Sportsman of the year (2001, 2002, 2003, 2004 and 2006, only surpassed by Eddy Merckx), plus a Lifetime Achievement award.
Stefan Edberg | Stefan Sagmeister | Stefan Lazarević | Stefan Zweig | Stefan Raab | Stefan Heym | Ştefan Voitec | Stefan Dennis | Stefan Żeromski | Stefan Wyszyński | Stefan Nemanja | Stefan Karlsson | Stefan Brockhoff | Stefan Aust | Adam Stefan Sapieha | Stefan Weisman | Ştefan Vodă | Stefan Skarbek | Stefan Simonsson | Stefan Olsson | Stefan Lorant | Stefan Lochner | Stefan Heidemann | Stefan Guzy | Stefan Gryff | Stefan Grossman | Stefan Everts | Stefan Danailov | Tadeusz Stefan Zieliński | Sveti Stefan |
Musquin won the 2009 F.I.M. MX2-GP World Championship and, successfully defended his title in 2010 while riding for the KTM factory racing team managed by former world champion Stefan Everts.
The aim of his new deal was to beat his old rival Stefan Everts in the MX1 World Championship, and claim KTM's first World title in that category.
In 2010, Simpson competed for the KTM factory racing team managed by former world champion Stefan Everts in the F.I.M. MX2-GP World Championships.