- 6-time medalist in Canadian Skeleton Championships, including a gold medal in 1996.
- Silver medalist at the World Championships in 2000.
- World Cup Champion in 2006.
Mellisa has been active in the sport for over ten years. She attributed much of her success to her custom-made sleds, designed and manufactured by her cousin Ryan Davenport.
Mellisa's great-grandfather, Gustav Mottus, left Estonia at the age of 21 and eventually settled on a homestead west of Eckville, Alberta in 1911.