source: The Ring
Marco Antonio Rubio's team will be filing a protest after learning that following Saturday's unanimous-decision defense of his WBC middleweight title, Julio Cesar Chavez Jr. left without providing a post-fight urine sample to Texas officials for drug testing, as specified in the WBC's rules.
After the fight, Chavez "practically fled from the dressing room without leaving a sample" according to members of Rubio's team, as reported by Fightnews.com.
When asked about the lapse, WBC president Jose Sulaiman reportedly shrugged his shoulders and said, "we forgot."
RingTV.com broke the story leading up to the fight that Chavez had been arrested on Jan. 22 for drunk driving, and problems for the Mexican superstar continued as he struggled to make weight the week before, by some accounts being five pounds heavy just one day ahead of the weigh-in.
But make weight he did, and then bulked up to 181 pounds on fight night -- mass which he effectively used to his advantage in bullying the smaller Rubio around the ring.