Tony La Russa out indefinitely as White Sox manager, to undergo more medical testing - The Athletic
Chicago White Sox GM Rick Hahn on Tony La Russa's return
White Sox manager La Russa to be out indefinitely with health issue
Tony La Russa not returning to White Sox this year under doctors' orders
St. Louis Cardinals
Tony La Russa out indefinitely as White Sox manager, to undergo more medical testing - The Athletic
Rick_Hahn
Who is Miguel Cairo? White Sox tab coach as acting manager with Tony La Russa out indefinitely
Chicago White Sox manager Tony La Russa OK to travel with team for Oakland A's celebration, but not cleared to coach - ESPN
La Russa will not return this season, National Sports