Competing in track in high school, Shelton finished fourth in the 200 metres at the 2004 Florida 4A state meet, behind Walter Dix, Chris Johnson, and Alonzo Phillips.
Walter Scott | Sir Walter Scott | Walter Cronkite | Walter Raleigh | Walter Benjamin | Walter Mondale | Walter Matthau | Walter Gropius | Walter Hamma | Walter Savage Landor | Walter Burley Griffin | Walter Payton | Walter | Bruno Walter | Walter Winchell | Walter Crane | Walter Rilla | Walter Koenig | Walter Brennan | Fort Dix | Walter Sickert | Walter Pidgeon | Walter Isaacson | Walter Damrosch | Walter Crickmer | Walter Brueggemann | Otto Dix | Walter Reed | Walter Browne | Little Walter |
Samuels improved his 100 m personal record to 10.03 seconds in August 2010, finishing third at the Spitzenleichtathletik meet in Nottwil, Switzerland, behind Nesta Carter and Walter Dix.
He demonstrated his sprinting ability in the 100-meter dash at the 2007 USA Outdoor Track and Field Championships, where he recorded 10.07 seconds in the final – ahead of Walter Dix and second only to Tyson Gay.