Major League Baseball has requested the assistance of the U.S. Anti-Doping Agency (USADA), as it investigates the claims made in the Al Jazeera documentary, "The Dark Side," that several players received banned substances, per T.J. Quinn of ESPN.com.
"We've had discussions with USADA and are hopeful that together we can make progress in this investigation," said Dan Halem, MLB's chief legal officer, per Quinn.