Óscar Guido Trejo (born 26 April 1988) is an Argentine former professional footballer who played as an attacking midfielder or forward.
After starting out at Boca Juniors, he went on to spend the majority of his career with Rayo Vallecano in Spain, making 334 appearances in all competitions.
Club career Trejo was born in Santiago del Estero. A product of Boca Juniors' youth system, he only played once for its first team but, in the game against Club Almagro, he scored in a 3–2 away loss after a mere minutes on the pitch – the match was suspended after 63 minutes.
In late December 2006, Trejo was bought by RCD Mallorca in Spain, still having not signed his first professional contract; Boca sustained otherwise and the case was taken to FIFA, which ultimately decided for the Balearic Islands club. He made his first appearance in La Liga on 8 April 2007, against Getafe CF: having come on as a 90th-minute substitute, he managed to find the net for a final 2–0 home victory.
Sparingly used over the following seasons, Trejo managed to score in the 2007–08 edition of the Copa del Rey in a 2–1 home win over Real Madrid (3–1 aggregate). After an unassuming 2008–09, he was loaned the following campaign to Segunda División side Elche CF.
On 15 August 2010, a similar move ensued, with Trejo joining Rayo Vallecano in the same tier. He returned to the top flight in the 2011–12 season, scoring four goals from 33 appearances for Sporting de Gijón but suffering relegation.
In the summer of 2012, Premier League's West Ham United made an attempt to buy Trejo, but the deal fell apart. He left Spain one year later, going on to spend several seasons in the French Ligue 1 with Toulouse FC after agreeing to a four-year contract.
Trejo returned to Rayo on 21 June 2017 as director of football David Cobeño's first signing, six years after leaving. He scored a career-high 12 goals in his first year, combining with Raúl de Tomás for 36 as the team returned to the top division as champions.
Trejo continued to feature regularly for Rayo Vallecano in the following years, and became the sixth-highest appearance maker for the club in December 2024, at 303. On 8 July 2025, after helping them to qualify for the UEFA Conference League, their first European competition in more than 20 years, the 37-year-old renewed his contract for another season.
On 17 May 2026, Trejo played his last home match for Rayo in a 2–0 defeat of Villarreal CF, receiving an emotional farewell from the crowd after being substituted in the second half. In June, he announced his retirement.
Career statistics
+ Appearances and goals by club, season and competitionClubSeasonLeagueNational cupLeague cupEuropeOtherTotalDivisionAppsGoalsAppsGoalsAppsGoalsAppsGoalsAppsGoalsAppsGoalsBoca Juniors2004–05Primera División1100———11Mallorca2006–07La Liga8100———812007–08La Liga17261———2332008–09La Liga11050———160Total363111———474Elche (loan)2009–10Segunda División34410———354Rayo Vallecano (loan)2010–11Segunda División40911———4110Sporting Gijón2011–12La Liga33400———3342012–13Segunda División38541———426Total71941———7510Toulouse2013–14Ligue 13222011——3532014–15Ligue 13141000——3242015–16Ligue 13441130——3852016–17Ligue 12921010——312Total126125151——13614Toulouse B2014–15CFA 210————10Rayo Vallecano2017–18Segunda División361200———36122018–19La Liga26110———2712019–20Segunda División37520———3952020–21Segunda División38430——414552021–22La Liga32361———3842022–23La Liga34330———3732023–24La Liga31010———3202024–25La Liga19143———2342025–26La Liga7031—60—161Total2602923500604129335Career total5696745951604162978
Honours Rayo Vallecano Segunda División: 2017–18 UEFA Conference League runner-up: 2025–26
References
External links