Mario began riding at a young age, coached by his father, Roger. In 1984, 19-year-old Mario became the youngest rider to ever win the World Cup Final, a record he still holds today. He was also the first Canadian to ever capture the title. Later that year, at the Olympic Games in Los Angeles, he was involved in a three-way jump-off for the individual bronze medal.
Mario had a sensational 1997 season winning several grand prix competitions and capturing the Canadian Show Jumping Champion title for the second time, the first being in 1992 with Alemao.
After finishing second in 1998's first World Cup Qualifier at Spruce Meadows, Mario returned home to Bromont, Quebec, to win. The following week in Quebec City, he again won the World Cup Qualifier, and followed-up with another second in Blainville. On a hot winning streak, he also captured the 1998 World Equestrian Games Selection Trials with his veteran thoroughbred gelding, Amistad, who was retired at the end of the season.
While competing once again at the 1999 World Cup Final, Mario was awarded his World Cup silver medal, signifying that he has competed in over 100 World Cup Qualifying competitions. A two-time Canadian Show Jumping Champion, Mario has represented Canada at every major international event.
Current sponsors: Molson, CWD (saddles), Grand Prix (equestrian clothing and accessories), Pikeur, Eskadron.