David Ortiz says former Red Sox manager Bobby Valentine must have "mental issues"

Bobby Valentine and David Ortiz continue their war of words even though Valentine was fired by the Red Sox last month. (Rob Carr/Getty Images)

Boston Red Sox designated hitter David Ortiz didn't appreciate his former manager Bobby Valentine saying last month that he quit on the team after he went on the disabled list in late August.

On Monday, Ortiz shot back at Valentine saying he was advised to stop playing because of an Achilles injury.

"After he went on national TV to say what he said, he sent me a text message trying to tell me that it was the media trying to change things," Ortiz told ESPNDeportes.com. "I did not respond to the message and I said to myself, this guy must have some mental issues or needs medicine or something? I said, I am dealing with someone crazy and I am not going to drive myself crazy, so it is better if I leave it alone.”