Agustín Marchesín

Lanús

In 2007, Marchesín was signed by Club Atlético Lanús from regional club Huracán de Tres Arroyos (which he was already a first team member since 2005, but did not play). He was a non-playing member of the Lanús squad that won the 2007 Apertura tournament. On 1 March 2009, Marchesín made his competitive debut in a 2–0 win against Gimnasia y Esgrima de Jujuy. On 29 April, he made his first appearance in the Copa Libertadores, a 1–1 draw against Caracas FC. That year, he relegated Mauricio Caranta to the bench and established himself as first-choice goalkeeper, playing in most of Lanús' games of the Apertura tournament. In 2013, Marchesín won the Copa Sudamericana with Lanús, starting in both matches of the finals against Ponte Preta of Brazil.

Santos Laguna

In December 2014, Marchesín, along with Lanús teammate Diego González, was sold to Mexican side Santos Laguna as a replacement for retiring goalkeeper Oswaldo Sánchez. In his first year at the club, he won the 2015 Clausura and 2015 Campeón de Campeones cup.

América

On 2 December 2016, it was announced that Santos Laguna had sold Marchesín to Club América. Marchesín made his 100th league appearance in Mexico in América's 2–1 win against Toluca on 30 September 2017. On 16 December 2018, Marchesín won his first league title with América following a 2–0 aggregate victory over Cruz Azul in the Apertura finals.

Porto

On 31 July 2019, Marchesín moved to Portugal's FC Porto on a…

Club

As of 24 September 2023

International

As of 9 June 2021

Marchesín was the starting goalkeeper for the Argentina national U21 team that finished third at the 2009 Toulon Tournament. On 20 August 2010, Marchesín received his first call for the senior national team for a friendly match against Spain. Marchesín got his first cap in a friendly match against Venezuela as a half-time substitute for Javier Hernán García on 16 March 2011, with Argentina winning the match 4–1 in San Juan. In September 2014, Marchesín received his first call-up in more than three years when Gerardo Martino called him up for the friendly matches against Brazil and Hong Kong, playing against the latter and earning his second cap. He was called up for the 2015 Copa América after Mariano Andújar suffered a hand injury midway through the tournament. On 15 September 2017, Marchesín received his first call-up under Jorge Sampaoli for the 2018 FIFA World Cup Qualification matches against Peru and Ecuador on 2 and 5 October. On 14 November, he made his first start for the national team in a 4–2 friendly loss to Nigeria in Krasnodar, Russia. In May 2019, Marchesín was included in Argentina's 23-man squad for the 2019 Copa América. He was also named in the 28-man squad for the 2021 edition, which they won for the first time since 1993. On 8 June that year, he made his competitive debut when Emiliano Martínez was injured in a 2022 FIFA World Cup qualification match away to Colombia, and made an added-time error that allowed Miguel Borja to make it 2–2.

As of January 2025, Marchesín was married to Sol, with whom he had been in a relationship for over 20 years; the couple had a son and a daughter.