Sudden deaths of young competitive athletes are tragic events that continue to have a considerable impact on the lay and medical communities.1–17 These deaths are usually due to a variety of unsuspected cardiovascular diseases and have been reported with increasing frequency in both the United States and Europe.1,5 Such deaths often assume a high public profile because of the youth of the victims and the generally held perception that trained athletes constitute the healthiest segment of society, with the deaths of well-known elite athletes often exaggerating this visibility. These counterintuitive events strike to the core of our sensibilities, periodically galvanizing discussion and action, and in the process raise practical and ethical issues related to detection of the responsible cardiovascular conditions.