[1] He qualified for the men's lightweight category at the 2008 Summer Olympics in Beijing, by finishing fourth from the Pan American Weightlifting Championships in Callao, Peru.

Luna-Grenier started his sporting career at the age of thirteen, when he was discovered at a summer day camp by Mario Parente, a certified national Olympic weightlifter from the 1984 Summer Olympics in Los Angeles, and a coach, who quickly shaped him into an elite athlete.

[3] In 2006, Luna-Grenier, however, was devastated upon the death of his coach Parente from an apparent heart attack, but had forged on with the guidance of Andre Kulesza, who administered and worked as the head coach for Club d'Haltérophilie de Montréal.

[4] Despite his former coach's sudden loss, Luna-Grenier had captured numerous sporting successes, including his seventh-place finish at the 2006 Commonwealth Games in Melbourne, Australia, and top-ten finishes from the Junior World Championships.

[5] His sporting effort tied him with Sri Lanka's Chinthana Vidanage, who ranked atop the group for weighing seven hundredths of a kilogram less than his weight.