|Date of birth:||May 26, 1988|
|Place of birth:||Greece|
|Height:||6 ft 1 in (1.85 m)|
|Weight:||294 lb (133 kg)|
|High school:||Birmingham (AL) Mountain Brook|
|* Offseason and/or practice squad member only|
|Career highlights and awards|
|Career NFL statistics|
High school career
Vlachos attended Mountain Brook High School in Birmingham, Alabama. Originally a guard, Vlachos was a three-star prospect out of high school, ranked 19th nationally by Rivals.com, 16th in the state of Alabama by Scout.com and 15th in Alabama by the Mobile Press-Register. As a senior, he was recognized on the 6A All-State team.
As a redshirt sophomore in 2009 Vlachos started every game, helping pave the way for eventual Heisman Trophy winner Mark Ingram to rush for 1658 yards and 17 touchdowns, and helped Greg McElroy throw for 2508 yard and 17 touchdowns, en route an SEC Championship and a BCS National Championship. As a redshirt junior, Vlachos again started every game en route to a 49-7 victory over Michigan State in the 2011 Capital One Bowl. As a redshirt senior in 2011, Vlachos again paved the way for another prolific running back, this time Trent Richardson, who rushed for 23 touchdowns and finished as a Heisman Trophy candidate. Vlachos and Alabama would win another BCS National Championship. Vlachos finished his career having started 40 consecutive games and having played in 48 total games.
- "William Vlachos". Retrieved 11 August 2012.
- "Titans Agree to Terms with Undrafted Players". 30 April 2012. Retrieved 11 August 2011.
- Vlachos following in the footsteps of his grandfather. The Daily Home. Retrieved October 22, 2013.