Blackmon still hasn't signed his rookie contract. (Getty Images)

Wide receiver Justin Blackmon, the Jaguars No. 5 overall draft pick, has pleaded guilty to a charge of aggravated DUI in Stillwater, Okla., according to the AP (via the Florida Times Union).

He received a one-year deferred sentence, and as long as he fulfills the terms of that sentence, he’ll stay out of jail. Blackmon also has to spend 50 hours doing community service and pay a $500 fine.

As Vito Stellino writes, Blackmon also likely will enter the league’s substance abuse program. He’s one of the few first-round draft picks still unsigned, and until he inks his name on a contract, he won’t be at training camp when the Jaguars open Thursday.

This isn't the first time Blackmon has been in trouble. In 2010, he was arrested on a DUI complaint, and he was suspended for a game by Oklahoma State coach Mike Gundy.

In this case, Blackmon originally pleaded not guilty, but police said he was speeding as fast as 60 mph in a 35 mph zone before his early June arrest. He was given two blood alcohol tests, and he registered a 0.24 on the first (three times the legal limit) and 0.26 on the second.

As a result, the Jaguars very well could give him less guaranteed money on his rookie contract. Which might be one of the reasons he hasn't signed it yet.

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