Chicago White Sox manager Tony La Russa is out indefinitely because of an unspecified medical issue, the team announced Wednesday.
Bench coach Miguel Cairo will manage the White Sox on an interim basis while La Russa undergoes testing by his personal physicians in Arizona.
"It's unbelievably tough," outfielder Andrew Vaughn said. "We really don't have much information on what's going on."
Cairo said after Tuesday's loss to the Kansas City Royals that the White Sox hoped to learn more about La Russa's status Wednesday.
"We are going to keep him in our thoughts and hopefully everything is fine," Cairo said.