Javier Alejandro Mascherano (Spanish: [xaˈβjeɾ aleˈxandɾo mastʃeˈɾano], Italian: [maskeˈraːno]; born 8 June 1984) is an Argentine football manager and former player who was most recently the head coach of Major League Soccer club Inter Miami. As a player, he played as a centre-back or defensive midfielder, most notably for Liverpool, Barcelona and the Argentina national team, being heralded as one of the best defenders and midfielders of his generation.
Mascherano began his career at River Plate, where he earned his first senior honours, the Argentine Primera División, in the 2003–04 season. He moved to Brazilian side Corinthians in 2005, winning the Brazilian Série A that same year, and then joined West Ham United in the Premier League; however, his brief time with the Hammers was blighted by unusual contract terms with Global Soccer Agencies. At the beginning of 2007, Mascherano was loaned out to Liverpool and reached the UEFA Champions League final. Afterwards, his deal was made permanent for £18.7 million. He left for Barcelona in 2010, winning five La Liga titles, two Champions Leagues and two FIFA Club World Cups among other honours, in eight years. He ended his career in 2020 after spells at Hebei China Fortune and Estudiantes.
Mascherano made 147 appearances for the Argentina national team and is the second most capped player in the country's history (after Lionel Messi). From his debut in 2003 until his retirement in 2018, he represented the nation at five Copa América tournaments, finishing runner-up in 2004, 2007, 2015, and 2016, and four FIFA World Cups, reaching the 2014 final. He twice won a gold medal at the Summer Olympics, in 2004 and 2008, becoming the first male footballer to achieve this double feat since Hungarian defender Dezső Novák in 1968. Between 2008 and 2011, Mascherano served as the captain of Argentina.
Mascherano began working as a manager in 2022, with the Argentina under-20 and under-23 teams, coaching the latter at the 2024 Olympics. At the end of 2024 he was appointed by Inter Miami, where he won the MLS Cup in 2025.
Born in San Lorenzo, Santa Fe, Mascherano came through the youth ranks at River Plate in Buenos Aires, Argentina. However, before making his club debut he made his name representing Argentina.
Mascherano won his first silverware when River won the 2003–04 Clausura championship. In the 2004 Copa Libertadores River reached the semi-final, but lost on penalties to arch-rivals Boca Juniors. Around this time several clubs including Real Madrid, and Deportivo La Coruña declared an interest in signing Mascherano, but River Plate turned down all offers, saying that none of the interested parties were prepared to pay enough.
2004–05 was not a successful season for River, finishing third in the Apertura Championship and only tenth in the Clausura. In the Copa Libertadores River again lost in the semi-final, this time to São Paulo. After the Confederations Cup in Germany, Brazilian club Corinthians acquired Mascherano from River Plate for US$15 million.
The Brazilian Série A runs from April, so Mascherano joined Corinthians mid-season. After playing only nine games for his new club, in September 2005, Mascherano fractured his left foot, causing him to miss the end of the season. He returned to Argentina to be operated on by the national team doctor and recuperate. Corinthians, however, still won the Série A title with Mascherano's compatriot, Carlos Tevez, as captain.
In total, Mascherano was out of action for six months, only returning on 5 March 2006. Corinthians were forced to start their 2006 Copa Libertadores without Mascherano, but he returned in time for the Round of 16 tie against River Plate, which the Timão lost. The 2006 Brazilian Série A also went badly for Corinthians – at one point, they were even battling relegation. In June, the league was interrupted for the 2006 World Cup.
Although his performances in both Brazil and Germany drew the attention of European clubs, Mascherano stated his desire to remain with Corinthians to help with their relegation battle and postponed any transfer until January at the earliest. Hours before the summer transfer window of 2006 closed in Europe, however, he joined West Ham United alongside Tevez for an undisclosed fee.
Throughout the summer of 2006, Mascherano was linked with top clubs around Europe; he stated he would relish playing in Spain for Real Madrid or Barcelona. Serie A side Juventus was also interested in him, but he came with Carlos Tevez to West Ham United instead. There were many rumours about the surprise nature of Mascherano and Tevez's transfers, primarily regarding Media Sports Investment's interest in buying out the club and whether they truly owned the two players, or whether a third party held their registration, and also that if a high enough (£112 million was touted) offer was received, West Ham would be forced to sell. (It has since been discovered that Mystere Services and Global Soccer Agencies are the companies that owned Mascherano.)
Before Mascherano joined, West Ham had won, drew and lost one game each. Upon his arrival, however, the Hammers went into free-fall, losing eight times and drawing once in all competitions before their next win on 29 October. During this time, Mascherano rarely featured in the squad despite their struggles, prompting rumours about financial clauses related to the amount of time he actually played. In October, national team coach Alfio Basile stated that he hoped Mascherano would leave West Ham "as soon as possible" and join Juventus.
On 16 January 2007, Liverpool requested clearance from FIFA to take Mascherano on loan from West Ham. FIFA's rules state that no player can play for more than two clubs between 1 July and 30 June the following year, as Mascherano had already played for both Corinthians and West Ham during that time.
FIFA approved the deal on 31 January 2007. However, although Liverpool submitted his registration details before the midnight transfer deadline, the Premier League did not immediately announce whether it would allow Mascherano to play for Liverpool, saying that it wanted to "take time to satisfy itself with the proposed arrangements".
In a further development, it was announced on 2 March that the Premier League were charging West Ham with breaking rule B13, concerning acting in good faith, and rule U18, which concerns the influence of third-party ownership. On 27 April, the Premier League issued West Ham a world-record fine of £5.5 million.
On 10 February 2007, Liverpool added Mascherano to their UEFA Champions League squad and gave him the number 20 shirt. Eventually, on 20 February 2007, Mascherano's move to Liverpool became official after the Premier League accepted Liverpool's request to register the player at Anfield.
Mascherano made his debut for Liverpool against Sheffield United on 24 February 2007, and was praised by the Liverpool manager Rafael Benítez and team captain Steven Gerrard after Liverpool's 4–0 victory. After playing in a match against Arsenal on 31 March, Benítez called Mascherano a "monster of a player". Similarly, his teammates were impressed by his talent; Xabi Alonso noted how mature a player he was for his age, saying, "He has a cool mind on the pitch. He is analysing and thinking about the game in each moment." Mascherano's first Champions League appearance came in the quarter-final first leg away to PSV Eindhoven on 3 April. Hastily establishing himself as a starter at the club, Mascherano played in the Champions League final that year against Milan. He and teammate Alonso were successful in stifling the creative play of both Kaká and Clarence Seedorf for much of the match but Liverpool eventually succumbed to Milan, losing 2–1 at the Olympic Stadium in Athens. He was voted Liverpool's man of the match by the fans on the official Liverpool website.
Following months of speculation, Mascherano signed a four-year permanent contract with Liverpool on 29 February 2008, ending his association with Media Sports Investments. The transfer reportedly cost Liverpool £18.6 million, and covered not only the transfer fee, but also the player's wages for the four-year deal. It was allowed to go through immediately as Mascherano was not contracted to another club, making him exempt from the rules of the transfer window. He scored his first Premier League and Liverpool goal on 15 March 2008, with a 20-yard strike against Reading.