Gastón Sauro

Boca Juniors

Sauro made his professional debut with Boca Juniors during the 2008–09 season.

FC Basel

On 6 July 2012, it was announced that Sauro had signed a four-year contract with Swiss club FC Basel. Sauro made his debut on 17 July in a 2–0 away win against Flora Tallinn in the 1st Leg of the second qualifying round to the 2012–13 UEFA Champions League. He made his Swiss Super League debut on 28 July in a 2–2 draw away against the Grasshopper Club. He scored his first goal for the club in the home game at the St. Jakob-Park on 26 September, as Basel won 4–1 against FC Sion. At the end of the 2012–13 Swiss Super League, Sauro won the Championship title with Basel. In the 2012–13 Swiss Cup Basel reached the final, but were runners up behind Grasshopper Club, being defeated 4–3 on penalties, following a 1–1 draw after extra time. At the start of the 2013–14 season, Sauro was a member of the Basel team that won the 2013 Uhrencup. At the end of the 2013–14 Swiss Super League, Sauro won his second league championship with Basel. The team also reached the final of the Swiss Cup on 21 April 2014l Sauro and Giovanni Sio were both sent off as Basel lost to rivals FC Zürich 2–0 in extra time, after a goalless 90 minutes. During his time with Basel, Sauro played a total of 91 games, scoring three goals.

Loan to Catania

On 19 August 2014, Sauro joined Serie B club Catania on an initial one-year loan deal with an option to buy. He was given the number 15…

Sauro was a member of the Argentina squad at the 2007 FIFA U-17 World Cup. He made his debut in the match against Costa Rica, where he scored both goals in his team's 2–0 victory.

A strong, physically imposing player, former teammate Wil Trapp called Sauro a player that "exudes confidence; he’s a natural leader [...], a guy who you can really rely on to crunch a guy when a guy needs to be crunched. He’s a physical beast, but he’s a smart player as well.”

Sauro earned his U.S. green card prior to the 2017 MLS season. This status also qualifies him as a domestic player for MLS roster purposes.