At 33 years old, Marcos Rojo has this physical status:
Rojo played for La Plata, Argentina, and he joined Estudiantes de La Plata at the age of ten.
After signing his first professional contract, he was promoted to the club's main team in 2009. He spent three years with the team, making 43 appearances and scoring three goals. He appeared in the 2009 FIFA Club World Cup Final, an extra time after Estudiantes lost 2–1 to FC Barcelona in Dubai.
Rojo won a Copa Libertadores and an Argentine Primera División crown during his time in Estudiantes. In a 2–1 loss to LDU Quito in the 2010 Recopa Sudamericana, the defender appeared in the majority of games as a left-back and established a reputation as a versatile attacker, scoring his first goal.
Rojo began working with Spartak Moscow in December 2010. On April 20, 2011, he scored his only goal for Spartak in the Russian Cup's quarterfinals.
Rojo moved from Spartak Moscow to Sporting CP in July 2012, after a four-year deal. Rojo played the entire match and received a yellow card in a 0–0 draw with Vitória de Guimares on his Primeira Liga debut for Sporting on August 19, 2012, playing the entire match and receiving a yellow card. In a league match against Porto on October 7, 2012, he received his first red card for Sporting, with two cautions within three minutes as Sporting lost by 2–0. On April 28, 2013, he scored his first goal for Sporting, netting the winner over Nacional. In his first season in Portugal, Rojo mostly played center-back, with occasional left-back action, despite the team's poor season, finishing seventh in the league.
Rojo scored his first goal of the season in his second league match of the 2013–14 season, defeating Académica de Coimbra 4–0. Rojo was disqualified in a Primeira Liga match against Belenenses on April 19, 2014, but Sporting retained for a 1–0 victory. He scored six goals in an improved season as Sporting finished as runners-up.
Rojo was being disciplined by his club for failing to train after handing over a transfer request to force a transfer to Manchester United's Premier League club Manchester United was revealed on August 13, 2014. Bruno de Carvalho, the sport's president, alleged that third-party owners of Rojo who were not representatives of Manchester United had compelled his club to sell Rojo, pressuring his club into selling the player.
Both Sporting and Manchester United reported an agreement to sell Rojo for €20 million (£16 million). United reported that they had signed him to a five-year deal, with Nani moving to Sporting on a season-long loan. Rojo said that playing with Manchester United was a "dream for me."
Because of pending criminal charges in Argentina, where he is accused of having an altercation with a neighbor in 2010, Rojo missed three matches for United due to difficulties in obtaining a work permit. He was granted a work permit by the UK Border Agency to work in England on September 4th. United defeated Old Trafford for the first time in the season, playing the entirety of the 4–0 victory over Queens Park Rangers ten days later. In United's 1–0 loss in Manchester's 1–0 loss in the Manchester derby on November 2nd, Rojo was stretchedered off, suffering shoulder pain from a tackle on Manchester City's Martn Demichelis. It was later discovered that he had dislocated his shoulder, contributing to United's defensive injuries alongside Jonny Evans and Phil Jones. Rojo scored his first goal for United on February 3, 2015, when the second goal of a 3–0 victory over Cambridge United in an FA Cup fourth round replay.
Rojo was set to rejoin the remainder of the squad after competing for Argentina in the Copa América. However, passport problems led Rojo to postponed pre-season tours entirely, and "angered" boss Louis van Gaal was reportedly. Rojo was fined £140,000 for failing to coordinate with the remainder of the team on time. Rojo was suspended in the first half for fouling Pape Souaré and was substituted for Matteo Darmian after 66 minutes in the 2016 FA Cup Final, where United won 2–1 after extra time against Crystal Palace.
Rojo scored his first Premier League goal against Bournemouth on March 4, 2017, opening a 1-1 home draw. During a 2–1 win over Anderlecht in the Europa League quarterfinals on April 20, he sustained a season-ending cruciate ligament injury, which United ended up winning the tournament. He made his return to Watford on November 28, 2017 in a 4–2 victory.
Rojo signed a new deal with Manchester United in March 2018 that will keep him at the club until June 2021, with the possibility to extend for a further year.
After a string of injuries, Rojo said that United boss Ole Gunnar Solskjr had told him he was part of his schemes when Solskjr was hired on a temporary basis in December 2018. However, he made just one Premier League appearance before being loaned out.
Rojo was loaned to Estudiantes, a boyhood organisation, for the remainder of the 2019–20 season.
Rojo returned to Argentina once more on February 2nd, 2021, for an undisclosed fee. Later, ESPN revealed that he learned of the move on social media. In the 2022 Copa de la Liga Profesional Final, Rojo scored the winning goal for Boca.
At the Stade de Genève, Geneva, Rojo was first captained on February 9, 2011, a 2–1 friendly win over Portugal. He was drafted in Argentina's squad for the 2011 Copa América and played the first match against Bolivia on July 2nd, a 1–1 draw against Bolivia. Argentina advanced to the quarter-finals after Javier Zanetti was left-back for the remainder of the tournament.
Rojo was selected in Argentina's squad for the 2014 FIFA World Cup in June 2014. In their 2–1 victory over Bosnia and Herzegovina at the Maracana, he made his FIFA World Cup debut, playing the entire game in defense and contributing to Sead Kolainac's own goal. Rojo scored his first international goal in the team's third group match, defeating Nigeria 3–2. The country reached the final before losing to Germany, and Rojo was the only Argentinean named in the Castrol Index Top 11 for the tournament.
Coach Gerardo Martino selected Rojo for the 2015 Copa América. Rojo missed out on penalty shootout in Argentina's goalless quarterfinal against Colombia in Via del Mar, but his team nonetheless advanced. In a 6–1 semi-final victory over Paraguay that sent Argentina into the final on June 30, he opened the scoring. He was involved in the entire game against the hosts at the Estadio Nacional de Chile, in which Argentina lost on a penalty shootout after a goalless draw.
Rojo was back in Martino's squad a year after the Copa América Centenario in the United States. He was suspended in the first half for a foul on Arturo Vidal, and both teams lost on penalties after the goalless game was decided on 10 men.
Rojo was selected by Jorge Sampaoli in the Argentina squad for the 2018 FIFA World Cup in Russia. He scored the winning goal against Nigeria once more, securing the team's qualification for the knockout stage as group runners-up behind Croatia on June 26th. He was banned from conceding a penalty in the 10th minute against France on June 30, which was later converted by Antoine Griezmann, who opened the scoring. Federico Fazio replaced Rojo in the 46th minute, and Federico Fazio took over in the 46th minute. Argentina lost the match 4–3 and was barred from the tournament.