White Sox manager Tony La Russa will see heart specialists, out indefinitely

La Russa will fly to Phoenix on Wednesday night

scheduled to see doctors Thursday at the Mayo Clinic

La Russa, 77, baseball’s oldest manager

recently had tests by a cardiologist in Chicago

Tuesday night that he miss the game against the Kansas City Royals

 It’s unknown whether La Russa, inducted into the Hall of Fame in 2014, 

further tests Wednesday