Sports in the United States for the United States. U.S. athletes have won a total of 2,522 medals (1,022 of them being gold) at the Summer Olympic Games and another 305 at the Winter Olympic Games. Most medals have been won in athletics (track and field) (801, 32%) and swimming (553, 22%). American swimmer Michael Phelps is the most decorated Olympic athlete of all time, with 28 Olympic medals, 23 of them gold. The United States has sent athletes to every celebration of the modern Olympic Games except the 1980 Summer Olympics hosted by the Soviet Union in Moscow, which it boycotted because of the
Japan at the Olympics Japan at the Olympics Japan first participated at the Olympic Games in 1912, and has competed at almost every Games since then. The nation was not invited to the 1948 Games after World War II, and Japan was part of the American-led boycott of the 1980 Summer Olympics in Moscow. Japan won its first medals in 1920, and its first gold medals in 1928. Japanese athletes have won 439 medals at the Summer Olympic Games (Except Art competitions at the 1936 Summer Olympics), with the most gold medals won in judo. Japan has also won 58 medals at the Winter