Arizona Cardinals rookie Tyrann Mathieu has failed so many drug tests for pot that he lost count at one point.
His marijuana use is just about as well-known as his football-playing ability -- to the point that there was actually an ad placed in a recent New Times issue by a local smoke shop, inviting Mathieu to come on down.
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-Tyrann Mathieu Responds to Smoke Shop Ad in New Times
Mathieu reportedly failed 10 drug tests while at LSU -- before he lost count. He reportedly told NFL coaches that he didn't actually know how many test he failed.
A Heisman Trophy finalist in 2011, Mathieu was kicked off the LSU team last season, reportedly after one of those failed drug tests, but Mathieu said he was going to rehab.
Two months later, in October, Mathieu was arrested for marijuana possession, but now, he swears he's beyond that.
Reports indicate that Mathieu's willing to sign a contract with the Cardinals that calls for weekly drug tests, so let's ask the burning question -- how long until this guy fails a drug test?
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Follow Matthew Hendley on Twitter at @MatthewHendley.