PGA tour rookie Charlie Beljan was taken to hospital with heart palpitations after shooting a 64 to seize the second-round lead in the Children's Miracle Network Hospitals Classic on Friday.
Beljan, fighting for a place on the tour for 2013, suffered an elevated heart-rate and shortness of breath, prompting him to lie or sit down between shots on the way to a three-shot lead at 12-under 132.
It was unclear whether the 28-year-old American, who leads seven players tied on 135, would return to play the weekend.
