Michael Papierski - MLB Trade Rumors mlbtraderumors.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from mlbtraderumors.com Daily Mail and Mail on Sunday newspapers.
Grandal felt discomfort while running to first base in the third inning Saturday and will undergo a series of tests in the next few days, manager Tony La Russa said.