Pedzisa mutsara unotevera: McMahon akahwina menduru dzebronze pa2002 FESPIC Mitambo mu4 × 400 m relay, Men's Javelin F37 pa2006 IPC Athletics World Championships uye Men's 4 × 100 m T35-38 pa
2011 IPC Athletics World Championships. Muna 2006, McMahon akagamuchira 2006 Sports Achievement Award. Pa2008 Beijing Paralympics, akapedza wechina muVarume Javelin F37/38.