At 35 years old, Emmanuel Mas has this physical status:
Mas was born in San Juan, Argentina, and attended the San Martn de San Juan youth academy. On June 21, 2008, he made his senior debut as a 19-year-old San Martn lost 1–0 to the Newell's Old Boys in the final game of the 2007–08 season.
Mas found his playing time in 2008–09 and then four the following season as San Martn failed to contend for promotion during the first two seasons. He established himself as a starter in the 2010–11 season, appearing 20 games during the regular season and scoring his first goal for the club against CAI Rivadavia on March 6, 2011. San Martn won promotion 2–1 on aggregate after playing in both promotion playoff legs against Gimnasia de La Plata.
In a 2–2 draw with Estudiantes de La Plata on August 26, he played every minute during the 2011 Apertura and scored his first top-flight goal. San Martn saved themselves from relegation by playing 0–0 with Rosario Central at the end of the season. He appeared in 37 of the 38 league games, his most in San Martn, with his performances leading to transfer interest.
Mas signed for San Lorenzo in July 2013. San Lorenzo clinched the 2013 Inicial title after he scored his first goal on November 17 in a 4–2 victory over Belgrano. During San Lorenzo's 2014 Copa Libertadores finals, Mas was an undisputed starter, starting all 14 games, beating Paraguay's Nacional to win the first Copa Libertadores title in team history. San Lorenzo qualified for the 2014 FIFA Club World Cup, which was held in Morocco in December 2014. In the semifinals, they defeated 2013–14 OFC Champions League winners Auckland City FC in extra time before losing to Real Madrid in the final. In both games, Mas played every minute. Mas played every minute of every game without being interrupted from 19 May 2014 to May 5, 2015, a streak of 52 matches. Mas' time with San Lorenzo earned him his first call-up to Argentina's national team in August 2015.
Trabzonspor, a Turkish Süper Lig club, reported on January 4th, 2017 that Mas has been signed for three and a half years on a three-and-a-half year deal until June 2020.
Following a €2.3 million transfer to Boca Juniors, Mas returned to the Argentina Primera División on January 4th. Rza embay, the player's manager, was quoted as saying he "did not want to sell Mas" because he was home sick and wanted to return home to raise his chances of qualifying for Argentina's 2018 World Cup squad this summer. Mas played 82 games for Boca Juniors between 2017–18 and 2020, as well as the 2020 Copa de la Liga Profesional. On the 30th of June 2021, he left Boca following his term's end.
Mas began in talks and close to a contract with Independence, but he eventually moved to the United States on July 2021 to sign a sixth-month deal with MLS side Orlando City until the 2021 season, with an additional club option year. Mas's contract option came to an end in the 2021 season after making 18 appearances in all competitions.
Mas returned to Argentina Prime Minister José Manuel División on January 6th, 2022, signing with Estudiantes LP.
Mas received his first call-up to Argentina's national team in August 2015 by Tata Martino as an injury substitute for Pablo Zabaleta. On September 4, 2015, he made his international debut, beginning with a 7–0 win over Bolivia at BBVA Stadium in Houston, which culminated in his 7–0 friendly victory over Bolivia. In the following game, a 2–2 draw with Mexico, he also appeared as a replacement. Argentina began 2018 FIFA World Cup qualifying with a 2–0 loss to Ecuador and a goalless draw with Paraguay a month later. Mas was recalled to the squad for the next window and started both matches. He was an unutilizable replacement in the upcoming series of qualifiers in November 2015 before being left out of the team in March 2016. He was not selected to the squad for the 2016 Copa América, but he was recalled in September after defeating Uruguay in World Cup qualifying. He appeared in a further three games, all as the starting left back, before being barred from the final four games as Argentina barely rescued qualifying in the last automatic position. Despite Martino's repeated pick as a chance to see players in contention for the World Cup, he was eventually suspended from the squad and has not been called up since.