Martinez has been dealing with some respiratory issues and spent Saturday night in the hospital as a result, Jim Hayes of FOX Sports Midwest reports.
It was originally reported that Martinez didn't pitch Sunday because he was dealing with the flu. However, manager Mike Shildt told reporters after Sunday's loss to the Brewers that Martinez has a respiratory issue that required a trip to the hospital. Typically, respiratory problems deal with the loss of muscle strength and endurance, which would hinder any athlete's performance in a game. The Cardinals could've used Martinez on Sunday as they went into the ninth inning up 4-3 and let in what would turn out to be a game-winning grand slam by Ryan Braun. The team hopes Martinez's illness is just day-to-day and that he will be available out of the bullpen shortly.