Steven was born to Raymond and Lisa Legendre, and has 2 sisters (Jaime and Jessica) and one brother, Michael.

In 2010, he claimed his 3rd consecutive floor title - tying him with Jonathan Horton's Oklahoma gymnastics record.

[3] Legendre joined the Senior National Team in 2008 and was chosen to compete in the 2009 World Artistic Gymnastics Championships in London, England.

He again competed in the floor final, where he managed to improve on his previous rankings at past world competitions, finishing in 5th place behind bronze medalists Alexander Shatilov and Diego Hypólito.

He tied with Hypolito for 5th place once again in the floor final and earned his first individual world medal, a silver on the vault behind Yang Hak Seon and ahead of Kristian Thomas.