Dodgers CEO Stan Kasten is worried that injured starting pitcher Chad Billingsley will not return this season, according to the LA Times.

Kasten's concern is "not based on medical evidence." He also said that the teams' ongoing search for another starting pitcher is not related to Billingsley's elbow injury.

"There has never been a team in the history of baseball that has not been looking for pitching," Kasten told the Times.

Billingsley was placed on the DL Saturday after an MRI revealed inflammation in his elbow.