Lanardo Tyner, two others fail drug tests on Feb. 28 Mayweather Promotions show Welterweight Lanardo Tyner was supposed to be facing Jermall Charlo this past weekend on the Sho-Extreme portion of the Keith Thurman-Julio Diaz card that took place in Carson, California. Tyner was inexplicably pulled out and was replaced by a late substitute. BehindTheGloves.com