WThe 2018 Pan American Women's Youth Handball Championship was the 12th edition of the tournament, held in the city of Buenos Aires, Argentina at the CeNARD from 10 to 14 April 2018. It acts as the American qualifying tournament for the 2018 Women's Youth World Handball Championship.
WArgentina competed at the 2018 Summer Youth Olympics in Buenos Aires, Argentina from 6 October to 18 October 2018, as host nation.
WArgentina competed at the 2018 Winter Olympics in Pyeongchang, South Korea, from 9 to 25 February 2018, with seven competitors in four sports.
WThe 2018 Argentine motorcycle Grand Prix was the second round of the 2018 MotoGP season. It was held at the Autódromo Termas de Río Hondo in Santiago del Estero on 8 April 2018. In the MotoGP class, Jack Miller scored his first MotoGP pole position. The race started on wet tyres, and drivers were obliged to swap bikes to slick tyres mid-race in the flag-to-flag rule. Cal Crutchlow took Honda's 750th victory and became the first non-factory rider to lead the championship since Sete Gibernau in the 2004 Catalan Grand Prix, as well as the first British rider to lead the championship since Barry Sheene in 1979. Repsol Honda failed to score for the first time since the previous year's event. Marc Márquez and Valentino Rossi collided in the closing stages, with Márquez receiving a 30-second time penalty for his incident with Rossi after the race.
WManny Pacquiao vs. Lucas Matthysse, billed as Fight of Champions, was a boxing match for the WBA (Regular) welterweight championship. The event took place on July 15, 2018 at the Axiata Arena in Kuala Lumpur, Malaysia. Pacquiao won the fight by 7th-round TKO and Matthysse announced his retirement shortly thereafter.
WThe 2018 Summer Youth Olympics, officially known as the III Summer Youth Olympic Games, and commonly known as Buenos Aires 2018, were an international sports, cultural, and educational event held in Buenos Aires, Argentina between 6 and 18 October 2018. They were the first Summer Youth Olympic Games held outside of Asia, and the first Youth Games for either summer or winter held outside Eurasia. It was the second Olympic Games held in South America after the 2016 Summer Olympics in Rio de Janeiro, Brazil.
WUFC Fight Night: Magny vs. Ponzinibbio was a mixed martial arts event produced by the Ultimate Fighting Championship that was held on November 17, 2018 at Estadio Mary Terán de Weiss in Buenos Aires, Argentina.