Edited sentence: An irregular heartbeat was the cause for the stress according to his doctors.Between games, he had gone home and tried to sleep but couldn't.Manager Terry Francona and General Manager Theo Epstein agreed that Ortiz fly back to Boston where he was reevaluated and cleared to play again in early September.On August 28, 2006, Ortiz had recurring symptoms from his irregular heartbeat and was a last minute scratch in the Red Sox game at Oakland.Ortiz also said he began feeling ill between games of a day-night doubleheader on August 18, 2006, against New York that dragged into the early morning.Ortiz was reportedly driven to the hospital by a team assistant.Ortiz would not originally talk about his condition, but opened up to the media on August 25, 2006, reportedly saying "I'm a healthy son of a [gun] "