From the reports I read Boston was willing and did submit to every test the cops had for him (breath, urine, blood). I imagine if he had something in his system he wouldn't have been so cooperative.
Bucs have also stated that they've reviewed the facts of the case and are confident there is nothing to the charges. The video of his sobriety test was posted on some other boards. He seemed fine to me, didn't appear impaired at all from what I saw. Wonder why the cop arrested him when he passed the breath test.
"If everyone liked the same thing everyone would be after your grandmother."