Philadelphia's Ryan Howard and Washington's Ryan Zimmerman have been cleared by Major League Baseball of allegations they used human growth hormone.
Pharmacist Charlie Sly claimed in an Al-Jazeera America documentary "The Dark Side: Secrets of Sports Doping," which was broadcast Dec. 27, that the two used HGH. Sly later recanted.
In a brief statement Friday, MLB said its investigation "did not find any violations of the Joint Drug Prevention and Treatment Program by either Howard or Zimmerman."
MLB said the players cooperated with its investigation and Sly did not.
Howard and Zimmerman denied the allegations and filed defamation suits against Al-Jazeera in January.