Source: Kurt Helin, NBC Sports Pro Basketball Talk 
Charlotte Bobcats rookie coach Steve Clifford — who has gotten his team off to a surprising 3-2 start to the season — checked himself into a Charlotte area hospital Thursday night because he didn’t feel well, the team announced Friday morning.
He stayed overnight in the hospital and continues to undergo tests, according to the team.
His status to coach the Bobcats when they host the Knicks Friday night is undetermined. If he can’t go it is likely assistant Patrick Ewing will be the head coach against the Knicks.