Many Swiss also follow ice hockey and support one of the 12 clubs in the League A, which is the most attended league in Europe. In 2009, Switzerland hosted the IIHF World Championship for the 10th time. It also became World Vice-Champion in 2013. The numerous lakes make Switzerland an attractive place for sailing. The largest, Lake Geneva, is the home of the sailing team Alinghi which was the first European team to win the America's Cup in 2003 and which successfully defended the title in 2007. Tennis has become an increasingly popular sport, and Swiss players such as Martina Hingis, Roger Federer, and most recently, Stanislas Wawrinka have won multiple Grand Slams. Swiss professional wrestler Claudio Castagnoli is currently signed with WWE, and is a former United States champion.