In 1977, sport in the country was reformed, creating professional teams with paid players for each sport. Since then, an annual championship, called the National Championship, has been held September through each year, together with several other competitions each year. These include the Man'gyŏndae Prize held since at least 2002 in March through April in honour of Kim Il-sung's birthday, the Paektusan Prize held since at least 2010 in February in honour of Kim Jong-il's birthday, and the Poch'ŏnbo Torch Prize held since 2010 in May through June to mark the anniversary of the Battle of Poch'ŏnbo. The Osandŏk Prize competition, held in December in honour of Kim Jong-suk, was originally the primary tournament of North Korean ice hockey and other winter sports, but football was added in 2015.