Greg was admitted to the Cleveland Clinic last night after experiencing dizziness prior to Wednesday's Red Sox-Indians game. After evaluation, it was determined that Greg had suffered subarachnoid hemorrhage.
Red Sox medical director, Dr. Larry Ronan and physicians from the Cleveland Clinic expect Greg to make a good recovery. However, for the next few days, Greg will remain in Cleveland for further evaluation.
According to the National Library of Medicine, a subarachnoid hemorrhage is "bleeding in the area between the brain and the thin tissues that cover the brain." That's obviously a very serious situation, and Colbrunn will surely take all the time he needs in order to recover fully.
Colbrunn, 44, played in the majors from 1992-2004. He has served as the Sox's hitting coach since the start of last season.