Julius Peppers, Clay Matthews and James Harrison are expected to meet with the NFL next month as part of an investigation into an Al-Jazeera America report on PEDs.
NBA players will be blood-tested for human growth hormone beginning next season.
Anthony Bosch has been sentenced to four years in federal prison for his role in the Biogenesis scandal.
Exactly one month has passed since the NFL instituted blood testing for human growth hormone -- a test experts say is almost impossible to fail.
Reinstated New York Yankees slugger Alex Rodriguez admitted to the use of performance-enhancing drugs during a meeting with the Drug Enforcement Administration in January, DEA documents show.
The NFL will begin testing for human growth hormone on Monday, NFLPA president Eric Winston told players in a letter this weekend.
