There were high hopes for the former South Carolina star's 40-yard dash. As Yahoo Sports' Anwar S. Richardson wrote, Clowney was aiming to run a 40-yard dash in 4.4 seconds.
According to NFL.com's Daniel Jeremiah, Clowney was officially recorded at 4.53 seconds:
Clowney put up a very impressive—but unofficial—time of 4.47 seconds on his first attempt:
On his second attempt, the 6'5", 262-pounder posted an unofficial time of 4.48 seconds:
In a race of potential No. 1 overall picks, Clowney easily beat former Texas A&M standout Johnny Manziel:
Check out Clowney's first attempt compared to former Oregon speedster De'Anthony Thomas' run from Sunday, which came in officially at 4.50 seconds: