WOW. ] Corey Koskie can testify to that. After sustaining a concussion in July 2006 while playing for the Brewers, Koskie attempted to come back despite symptoms including headaches, dizziness and nausea. He experienced far more severe symptoms for six months, and eventually had to retire. �That�s pretty much the reason I�m here today � thinking I could play through it,� Koskie said in a telephone interview from his home in Minnesota. Regarding Church, he added: �I think he�s nuts. He doesn�t want to get to the point where he�s not going to get better. Tell him to call me. It�s not worth it.�