Japan competed at the 2004 Summer Olympics in Athens, Greece, from 13 to 29 August 2004. Japanese athletes have competed at every Summer Olympic Games in the modern era since 1912 except for two editions; it was not invited to the 1948 Summer Olympics in London for its role in World War II, and was also part of the US-led boycott of the 1980 Summer Olympics in Moscow. The Japanese Olympic Committee sent a total of 306 athletes, 139 men and 167 women, to compete in 27 sports. For the first time in its Olympic history, Japan was represented by more female than male athletes.
The 2009 Southeast Asian Games, officially known as the 25th Southeast Asian Games, was a Southeast Asian multi-sport event hosted by Vientiane, Laos. This was the first time Laos had held the Southeast Asian Games as Laos had previously declined hosting the 1965 Southeast Asian Peninsular Games, citing financial difficulties. This was also the first time the Southeast Asian Games was held in a landlocked country.
The association football tournament at the 2007 Southeast Asian Games was held from 1 to 14 December in Nakhon Ratchasima Province of Thailand. The men's tournament is played by U-23 national teams, while the women's tournament has no age limit.
Italy competed at the 2008 Summer Olympics, held in Beijing, China. The country sent a delegation of 344 athletes to compete.
Brazil sent a delegation to compete at the 2008 Summer Olympics in Beijing, China, in August 2008. Brazilian athletes have competed in every Summer Olympic Games since 1920, except the 1928 Summer Olympics. The country is represented by the Brazilian Olympic Committee. Brazil headed to the Beijing Games with its largest Olympic delegation at the time, 277 athletes, including 132 women.
The football tournament at the 2009 Southeast Asian Games was held in Vientiane, Laos. The men's tournament was played by under-23 national teams, while the women's tournament has no age limit.
Argentina competed at the 2011 Pan American Games in Guadalajara, Mexico from October 14 to 30, 2011.
The 2011 AFF Women's Championship was held from 16 to 25 October 2011, hosted by Laos. All games were played at the Laos National Stadium and New Laos National Stadium.
The 2013 AFC U-22 Championship qualification was the qualification tournament for the inaugural edition of the AFC U-22 Asian Cup. The qualifiers took place from 23 June to 3 July 2012, but were later changed to 2–10 June for Group D, due to Nepal's request. The matches were later rescheduled to start from 16 June and 3 July for Indonesia.
The 2014 AFC U-16 Championship qualification was the qualification round for the 2014 AFC U-16 Championship, which took place in Thailand. The draw for the qualifiers was held on 26 April 2013 in Kuala Lumpur, Malaysia.
The United States of America (USA) competed at the 2004 Summer Olympics in Athens, Greece. 533 competitors, 279 men and 254 women, took part in 254 events in 31 sports.
Russian Federation hosted and competed at the 2013 Summer Universiade in Kazan, Russia. 663 athletes are a part of the Russian team which is the biggest team there. Russian team took a first place with almost a half of gold and more than quarter of all medals and set 38 of 67 records in this Universiade.
Malaysia competed in the 2013 Southeast Asian Games held in Naypyidaw, the capital of Myanmar, as well as in two other main cities, Yangon and Mandalay. Malaysia was selected the host nation for the 2017 edition.
The 2015 AFF U-19 Youth Championship was the 13th edition of the tournament which was held in Laos for the first time between 22 August to 4 September 2015. It was initially going to be played in Indonesia but they were suspended by FIFA in May 2015.
The 2015 Mekong Club Championship was the 2nd season of the Mekong Club Championship. Five teams entered as respective domestic league winners from Cambodia, Laos, Myanmar, Thailand and Vietnam. The championship is sponsored by Toyota.
The 2016 Mekong Club Championship is the 3rd season of the Mekong Club Championship. The championship is sponsored by Toyota and will be played between October 2016 and January 2017 featuring teams from Cambodia, Laos, Myanmar, Thailand and Vietnam.
Russia participated at the 2017 Summer Universiade in Taipei, Taiwan. Russia sent a delegation of 348 sportspeople and 169 assistants this time. Of those, 13 athletes were Merited Masters of Sport and 81 world-class Masters of Sport.
Laos participated in the 2018 Asian Games in Jakarta and Palembang, Indonesia from 18 August to 2 September 2018. Laos first competed at the Asian Games in 1974 Tehran, and the best achievement was in the last edition of 2014 Incheon, when the country gained a silver, and 2 bronze medals.
Vietnam competed at the 2018 Asian Games in Jakarta and Palembang, Indonesia from 18 August to 2 September 2018. The country surpassed its target of winning 3 gold medals at the Games by concluding the competition with 5 gold medals, 15 silver medals, and 19 bronze medals, ranking 16th out of 46 participating members of the Olympic Council of Asia.
The Group B of the 2022 AFF Championship were one of the two groups of competing nations in the 2022 AFF Championship. It consisted of Vietnam, Malaysia, Singapore, Myanmar, and Laos. The matches took place from 21 December 2022 to 3 January 2023.
