Wes Welker might be rethinking whether to call Tom Brady as a character witness.

Brady, the New England Patriots star quarterback, more or less turned his back on former teammate Welker on Wednesday.

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Welker, who now plays for the Denver Broncos, is serving a four-game suspension for testing positive for a performance-enhancing drug. Welker wrote an impassioned email to the Denver Post after the suspension was announced, accusing the NFL's drug-testing procedures of being flawed.

When asked about Welker's situation, Brady didn't exactly rush for a box of tissues.

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"I don't have a lot of thoughts or comments on that," Brady said, according to the Boston Herald. "That's Wes' situation, and their team. Obviously, I've got plenty to worry about with this week and this team. As a friend, you always hope the best. But, this is not friend time. It's opponent time. My focus is on the Dolphins."

Pro Football Talk, citing an anonymous league source, reported that Welker tested positive for MDMA, also known as Ecstasy or Molly, at the Kentucky Derby this year.

Welker told the Post, "I wouldn't have any idea where to get a Molly or what a Molly is. That's a joke. I don't do marijuana, I don't do drugs. I don't do any drugs.

"I have never been concerned with the leagues performance enhancing or drug abuse policies because under no scenario would they ever apply to me, but I now know, that (drug-policy procedures) are clearly flawed, and I will do everything in my power to ensure they are corrected, so other individuals and teams aren't negatively affected so rashly like this."

Brady also attended the Kentucky Derby and was asked whether he had seen Welker take anything.

Brady's demeanor in his response to that was in sharp contrast to that during his earlier comment. Brady let out a hearty laugh before say, "I've got no comment."

The only question left unanswered was which of Brady's comments angered Welker more.

Do you think Tom Brady should've been more supportive of former teammate Wes Welker? Comment below or tell us @SportsWN.