WASHINGTON -- Nationals left-hander Gio Gonzalez declined to comment on the report that Major League Baseball could suspend as many as 20 players involved with the anti-aging clinic, Biogenesis.

Gonzalez will not receive a suspension, according to a report. During Spring training, ESPN's Outside the Lines was told by two sources that Gonzalez did not receive banned substances from Anthony Bosch or Biogenesis. Gonzalez reportedly received glutathione, intramuscular shots and amino acids, but none of those substances are on Major League Baseball's banned substances list.

"We came into Spring Training with this kind of cloud over the team, and Gio came in and took the reins and explained exactly what happened," said reliever Tyler Clippard, who is also the team's player representative. "He wanted to make sure that he explained it to his teammates, which he did. I think he explained to the media just as well as he explained it to us. For me, knowing Gio, knowing the kind of guy that he is, I believe him wholeheartedly. He has done it the right way, in my opinion."

General manager Mike Rizzo declined to comment on the Tuesday's report, and manager Davey Johnson took it as "old news."

"As far as I'm concerned, that's kind of old news. That came out in spring," Johnson said.

Gonzalez has pitched in 12 games for the Nationals this season and is 3-3 with a 3.64 ERA in 12 starts.