 It is often considered to be the European equivalent of the Junior Orange Bowl in Florida, United States due to the high number of international players that it attracts.The event has seen a number of its champions go on to become slam winners, including Rafael Nadal, Michael Chang, Martina Hingis, Kim Clijsters, and Jeļena Ostapenko .Due to the relatively restrictive age range, few players have won the title more than once, although Hingis and Timea Bacsinszky have both done so.