When Al Jefferson crumpled to the court and grabbed his knee, the Minnesota Timberwolves feared the worst."When you have a heart condition and your heart stops for a minute, it's not a good thing," said assistant GM Fred Hoiberg, who had to retire from the NBA because of an aorta problem. "It was a relief when we found out that it was just a mild sprain." Source: Wolves' Jefferson sprains knee
