This topic is already being discussed in this FanPost, but I thought it was important enough to put something on the front page. Here's the summary of what's happened, if you've missed it.
The TV network Al Jazeera produced a documentary that named NFL star Peyton Manning, among others, in connection with a doping ring that had allegedly supplied him (possibly through his wife) with human growth hormone.
It should be noted that Manning has emphatically denied what was said about him in the documentary, saying he's "furious" and "disgusted." Both teams he's played for, the Colts and Broncos, have backed Manning. Further, the man quoted regarding Manning in the documentary, Charles Sly, has recanted some of what he told the undercover reporter.
Major League Baseball players are also named in the documentary, including Ryan Howard, Ryan Zimmerman and Taylor Teagarden. Teagarden played for the Cubs, briefly, in 2015.
An attorney representing Howard and Zimmerman issued the following statement:
William Burck of Quinn Emanuel represents Howard and Zimmerman. He released the following statement, condemning an Al Jazeera report scheduled to air on Sunday: "It's inexcusable and irresponsible that Al Jazeera would provide a platform and broadcast outright lies about Mr. Howard and Mr. Zimmerman. "The extraordinarily reckless claims made against our clients in this report are completely false and rely on a source who has already recanted his claims. We will go to court to hold Al Jazeera and other responsible parties accountable for smearing our clients' good names." The Phillies referred questions regarding the report to MLB. Howard's representation referred to Burck's statement.
Teagarden played eight games for the big-league Cubs (and hit a game-winning single off Aroldis Chapman in the second game of a doubleheader in Cincinnati on July 22) and is still in the organization. He was outrighted to Triple-A Iowa, where he played the bulk of the 2015 season, on October 27.
You can read more details in this Huffington Post article, which has this passage about Teagarden:
In a stunning scene, Taylor Teagarden, an eight-year MLB veteran, appears in one of the undercover videos, openly discussing his use of performance-enhancing drugs during the previous season.
You can watch the entire Al Jazeera documentary here:
The portion where Teagarden -- who is identified as a Cub -- appears begins at the 29:15 mark. It appears, given what is said by Teagarden, that this video was recorded after the 2015 season ended (he specifically says "I played with the Cubs last year"). Teagarden's appearance in the video lasts about two minutes. The Al Jazeera narrator says they asked Teagarden for comment, but he didn't respond.
I have reached out to the Cubs for comment and will post any response I receive.