LeBron James' 18-year-old son, LeBron «Bronny» James Jr., had a medical emergency during basketball practice on Monday, July 24.In a statement to ET, a spokesperson for the James family shared that the rising basketball star — who is set to make his debut with the University of Southern California Trojans basketball team this fall — suffered cardiac arrest and was rushed to the hospital. «Yesterday while practicing Bronny James suffered a cardiac arrest,» the statement reads. «Medical staff was able to treat Bronny and take him to the hospital.