Argentina competed at the 2004 Summer Olympics in Athens, Greece, from 13 to 29 August 2004. This was the nation's twenty-first appearance at the Olympic Games, except for three different editions. Argentina did not attend the 1904 Summer Olympics in St. Louis, the 1912 Summer Olympics in Stockholm, and the 1980 Summer Olympics in Moscow, because of its support for the United States-led boycott. The sailor Carlos Espínola was the nation's flag bearer at the opening ceremony. 152 competitors, 106 men and 46 women, took part in 86 events in 22 sports.
Aruba sent a delegation to compete at the 2004 Summer Olympics in Athens, Greece from 13 to 29 August 2004. The delegation's participation in the Athens Olympics marked Aruba's fifth appearance at the Summer Olympics since the Dutch colony's debut at the 1988 Summer Olympics in Seoul, South Korea. Four athletes competed across three sports. None of the track or swimming athletes advanced past the first round in their events, and as of Athens, no Arubans had medaled in any events. Roshendra Vrolijk bore Aruba's flag at the ceremonies.
Alberto César Mancini is a former professional tennis player from Argentina. He won three top-level singles titles and four tour doubles titles. His career-high rankings were World No. 8 in singles and No. 79 in doubles.
Javier Alberto Frana is a former tennis player from Argentina and former tennis commentator for ESPN Latin America. He won 1996 French Open mixed doubles title with compatriot Patricia Tarabini.
The featherweight boxing competition at the 2004 Summer Olympics in Athens was held from 16 to 28 August at Peristeri Olympic Boxing Hall. This is limited to those boxers weighing between 54 and 57 kilograms.
Eduardo Jonatan Schwank is a retired professional tennis player from Argentina. In 2011, he reached the finals of the French Open in men's doubles partnering Juan Sebastián Cabal and of the US Open in mixed doubles partnering Gisela Dulko. He was coached by Javier Nalbandian, the brother of David Nalbandian.
Argentina competed at the 2008 Summer Olympics held in Beijing, China, from 8 to 24 August 2008. 137 athletes qualified for the Olympic Games in 19 sports. Manu Ginóbili, basketball player and gold medalist at the 2004 Summer Olympics, was the nation's flag bearer at the opening ceremony.
Barbados sent a delegation to compete at the 2008 Summer Olympics in Beijing, China. The island nation made its tenth appearance as an independent nation upon its arrival in Beijing. Eight athletes across three sports and ten events represented Barbados, marking the smallest delegation in its history up to the Beijing Games. Its runners and swimmers advanced past the first rounds in their events in four of their nine events, although none advanced to their events' final rounds or medaled. The nation's flagbearer during the Beijing Games was swimmer Bradley Ally.
The Argentina Olympic football team represents Argentina in international football competitions during Olympic Games and Pan American Games. The selection is limited to players under the age of 23, except three overage players. The team is controlled by the Argentine Football Association (AFA).
The Portugal national under-23 football team represents Portugal in international football competitions in Olympic Games, as well as in under–23 football tournaments. The selection is limited to players under the age of 23, except three over-age players. The team is controlled by the Portuguese Football Federation (FPF). In three participations, Portugal's highest place was fourth, in 1996. This team also competed in the now-defunct Under-23 European Championship. The first time Portugal participated in the Olympic Football Tournament, they fielded main team players since the International Olympic Committee rules allowed to do so back then and in the 1980s, the team was composed of semi-professional players. The team currently qualifies in accordance to their under-21 team position in the UEFA Under-21 Championship. The results below comprise both the under-23 team as well as the Olympic team. They won the world championships
The men's shot put competition at the 2012 Summer Olympics in London, United Kingdom was held at the Olympic Stadium on 3 August. Forty athletes from 34 nations competed. The event was won by Tomasz Majewski of Poland, the nation's second consecutive and third overall victory in the men's shot put. Majewski was the third man to successfully defend Olympic shot put gold, both of whom added a silver medal after their two golds). David Storl of Germany took silver, the first medal for united Germany since 1936. Reese Hoffa took bronze to keep the American podium streak going at eight consecutive Games.
The individual show jumping in equestrian at the Rio 2016 Summer Olympics was held from 14–19 August. Like all other equestrian events, the jumping competition was mixed gender, with both male and female athletes competing in the same division. There were 74 competitors from 27 nations. The event was won by Nick Skelton of Great Britain, the nation's first victory in individual jumping and first medal of any color since making the podium four consecutive Games from 1960 to 1972. Silver went to Peder Fredricson of Sweden. Eric Lamaze of Canada took bronze, becoming the first person since 1968 and sixth overall to win multiple medals.
Argentina competed at the 2016 Summer Olympics in Rio de Janeiro, Brazil, from 5 to 21 August 2016. This was the nation's twenty-fourth appearance at the Summer Olympic Games, having missed only three editions since their 1900 debut: the 1904 Summer Olympics in St. Louis, the 1912 Summer Olympics in Stockholm and the 1980 Summer Olympics in Moscow because of its support for the United States-led boycott. The Argentine Olympic Committee sent the nation's largest ever delegation to the Games in Olympic history, surpassing the record set in London 1948.
Trinidad and Tobago competed at the 2016 Summer Olympics in Rio de Janeiro, from August 5 to 21, 2016. This was the nation's seventeenth appearance at the Summer Olympics, although it previously competed in four other editions as a British colony, and as part of the West Indies Federation.
Brazil competed in the 2016 Summer Paralympics in Rio de Janeiro, as host country, from 7 September to 18 September 2016.
Argentina competed at the 2016 Summer Paralympics in Rio de Janeiro, Brazil, from 7 to 18 September 2016. Wheelchair tennis player Gustavo Fernandez has been chosen to carry the nation's flag at the opening ceremony.
Six teams qualified for the Olympic softball tournament, including Japan, which, as host nation, qualified automatically. The United States team won the 2018 Women's Softball World Championship to qualify for the Olympics. The remaining four spots were allocated through three qualification tournaments: one spot for a Europe/Africa tournament, one spot for an Asia/Oceania tournament, and two spots for an Americas tournament.
Argentina competed at the 2020 Summer Olympics in Tokyo. Originally scheduled to take place from 24 July to 9 August 2020, the Games were postponed to 23 July to 8 August 2021, because of the COVID-19 pandemic. Since the nation's official debut in 1900, Argentine athletes have competed in every edition of the Summer Olympic Games, except the 1904 Summer Olympics in St. Louis, the 1912 Summer Olympics in Stockholm, and the 1980 Summer Olympics in Moscow because of their support for the United States-led boycott.
Trinidad and Tobago competed at the 2020 Summer Olympics in Tokyo. Originally scheduled to take place from 24 July to 9 August 2020, the Games were postponed to 23 July to 8 August 2021, due to the COVID-19 pandemic. It was the nation's eighteenth appearance at the Summer Olympics, although it previously competed in four other editions as a British colony, and as part of the West Indies Federation.
Jamaica competed at the 2020 Summer Olympics in Tokyo. Originally scheduled to take place from 24 July to 9 August 2020, the Games were postponed to 23 July to 8 August 2021, because of the COVID-19 pandemic. The country's participation marked its seventeenth Summer Olympic appearance as an independent state, although it has previously competed in four other editions as a British colony, and as part of the West Indies Federation.
Pablo Manuel Ojeda
Stephen Smith 
Daud Yordan 
Metro City, Northbridge, Western Australia, Australia