[Updated Oct. 30 with statement from DraftKings] (Disclosure: The author consults for a fantasy sports provider that is in current litigation against DraftKings) Overall, things could not be better for Major League Baseball. Revenues are soaring, game one of the World Series lasted fourteen innings, and the league is again considering franchise expansion. But instead of unbridled enthusiasm, several high-level MLB executives this week might be fearing the results of an ongoing U.S. attorney investigation of daily fantasy sports. This is based on Major League Baseball's longstanding equity stake in the daily fantasy sports website DraftKings, and its subsequent co-branded advertisements that describe DraftKings as the " Official Daily Fantasy Game " of Major League Baseball. Both of these relationships make Major League Baseball drastically different from a simple "passive investor" or small equity shareholder in the leveraged company.