Ping pong (乒乓) is the official name for the sport of table tennis in China. Apart from the national representative team, the table tennis community in China continues to produce many world-class players, and this depth of skill allows the country to continue dominating recent world titles after a short break during the 1990s. The overwhelming dominance of China in the sport has triggered a series of rules changes in the International Table Tennis Federation and as part of the Olympics. Ma Long is currently one of the highest-ranked Chinese table tennis players, and the highest-ranked player in the world.[16] Deng Yaping is regarded by many as one of the greatest table tennis players of all time. The sport played an important role in China's international relations; in April 1972, the US table tennis team were invited to visit China, an event later called "Ping Pong Diplomacy". Table tennis is the biggest amateur recreational sport in China today, with an estimated 300 million players.