Billie attended Dreher High School in Columbia, South Carolina, where he was coached by Bill Bacon. Billie played two seasons at linebacker before moving to running back his junior season, in which he rushed for 2,003 yards and 19 touchdowns and also made 52 tackles. As a senior, he rushed for 1,000 yards in the first five games of the 2002 season with an offensive line that did not have a returning starter, after missing two games with a sprained ankle, Billie ended his senior season with 1,570 yards and 17 touchdowns in just eight games; also added 58 tackles, including two sacks, three caused fumbles, and a blocked kick, good enough to make him a Mr. Football finalist, and earn him and appearance in the North-South All-Star Game. He set the school career rushing mark with 4,073 yards and 43 touchdowns. He was also a two-year letterman in Basketball and five-time letterman in track. Billie committed to Clemson University on July 8, 2003. Billie's lone other FBSfootball scholarship came from the University of South Carolina.
College career
Billie saw limited playing time as a freshman in 2003, but 2004 brought on a starting role for him. He finished the season with 62 tackles. In 2005, he was once again the starter as strongside linebacker, this time he 93 tackles finished 3rd on the team. In 2006, he Red-shirted after suffering a broken ankle in an August 18 practice. He was receiving strong draft consideration before this injury, but eventually fell out of favor with NFL teams and did not make it to camp.
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Professional career
In 2010, Billie signed with the Fort Wayne FireHawks to play indoor football. At the time, Billie was back home in South Carolina coaching and training some young athletes, and got a call from coach Donnie Caldwell to play. He went on to great success as he led the team to a 6–4 regular-season record and a third seed in the playoffs. Throughout the season, Billie had many outstanding games and set many franchise records as a two-way player. He tallied 12 carries for 34 yards and 6 touchdowns as a running back, and as a linebacker he had 66.5 tackles, 1 sack, forced 1 fumble, recovered 3 fumbles, and had 4 interceptions, 3 of which he returned for touchdowns. He went on to be Co-Defensive MVP of the league.
