Ryan Braun, the Milwaukee Brewers' All-Star outfielder, knows they are out there.

Everywhere he turns, everywhere he looks, they are there.

They are talking to his friends. They are talking to his peers. They are talking to his associates. They are scouring through paperwork. They keep digging.

They are the Major League Baseball investigators.

And Braun, five times an All-Star, the 2011 National League MVP and the only man known to successfully appeal an MLB-administered drug test, is their highest-profile target.

There are at least 90 baseball players, including Braun, whose names appear in the infamous Biogenesis Clinic records, according to one baseball official with direct knowledge of the investigation. The person spoke to USA TODAY Sports on the condition of anonymity because he is not authorized to discuss the matter because of privacy issues.

The Major League Baseball Players Association has contacted all of the players or the agents of players whose names surfaced in the records, but no major league player has been interrogated by MLB officials.

That will be coming, probably within the next two weeks, the official told USA TODAY Sports, although no firm deadline is set.

These players will have no choice but to talk to MLB officials. If they don't cooperate, MLB can suspend them, according to the bylaws of the collective bargaining agreement.