It looks to me like TribeInsider, which is the Indians PR twitter, was responding to a CAA_Baseball tweet that asserted the scoreless appearance fact as a great thing about Chris Perez. CAA_Baseball is the Twitter account of the agency that represents Perez. TribeInsider pointed out that Sipp has also done this.
Here's where it gets odd: someone replies from the ChrisPerez54 account (Perez's official account) and tells TribeInsider, cordially, that Sipp's irrelevant b/c he's not a CAA client.
The corresponding CAA_Baseball tweet is already gone. Obvious question is, does Chris Perez's agent actually run his Twitter account? That's the obvious explanation here—meaning to reply from the CAA_Baseball account but forgot to log out of the ChrisPerez54 account. And, of course, that wouldn't be shocking—many athlete Twitter accounts are obviously run by PR people. One of the reason's Perez is popular is that it comes across as considerably more authentic. Alternatively, was Chris Perez making some weird joke?
Not a whole lot to see here but a little odd, nonetheless.