
Oscar Valdez's "B" Sample Tests Positive, Title Fight With Robson Conceicao In Jeopardy
Oscar Valdez awaits his fate. The undefeated two-time and reigning WBC junior lightweight titlist is at risk of losing out on a scheduled September 10 title defense versus Brazil’s three-time Olympian and 2016 Gold medalist Robson Conceicao (16-0, 8KOSs) due to drug testing violation. Valdez tested positive for Phentermine as produced in a sample collected August 13 by agents contracted through Voluntary Anti-Doping Association (VADA). The “B” sample—which was tested earlier this week at the request of Valdez—came back positive, days after it was learned that the “A” sample showed evidence of the substance in his system.








