Supercopa de España in the context of List of career achievements by Lionel Messi

Lionel Messi is an Argentine professional footballer who plays as a forward for and captains both Major League Soccer club Inter Miami and the Argentina national team. His individual achievements include eight Ballon d'Or awards, the most for any footballer. Having won 46 team trophies, he is the most decorated player in the history of professional football. Messi is often hailed as a genius, with his prolific goalscoring ability and high level dribbling, passing and playmaking earning him recognition as one of the greatest and most iconic players in football history. In 2024, US-based sports company ESPN named Messi the greatest player of the 21st-century.

Messi's club career began with Barcelona, where he rose through the youth ranks, making his first-team debut in 2004. Over the next years, Messi became the club's all-time top scorer, amassing numerous domestic and international accolades. During his tenure, Barcelona secured ten La Liga titles, seven Copa del Reys, four UEFA Champions Leagues, seven Supercopa de Españas, three UEFA Super Cups, and three FIFA Club World Cups. In August 2021, due to financial constraints faced by Barcelona, Messi signed for Paris Saint-Germain (PSG). Joining forces with fellow superstars Neymar and Kylian Mbappé, he won two Ligue 1 titles and one Trophée des Champions. In July 2023, Messi joined Inter Miami, leading the team to win their first-ever trophies with the Leagues Cup and the Supporters' Shield.

A treble in association football is achieved when a club team wins three trophies in a single season. A continental treble involves winning the club's top-level domestic league competition, main domestic cup competition, and main continental trophy. Although winning a second-tier continental trophy (e.g. Europa League) has also been described as a continental treble, it is not as widely accepted. A domestic treble involves winning three national competitions—including the league title, the primary cup competition, and one secondary competition, such as a league cup.

Competitions which consist of a single match or a two-leg match are not normally counted as part of a continental treble (e.g., the FA Community Shield, Supercopa de España, Supercoppa Italiana, Trophée des Champions, DFL-Supercup, UEFA Super Cup, Recopa Sudamericana, FIFA Club World Cup (2005–2023 editions), Intercontinental Cup and others).

The Royal Spanish Football Federation (Spanish: Real Federación Española de Fútbol; RFEF) is the governing body of football in Spain. Founded on 29 September 1913, it is based in La Ciudad del Fútbol of Las Rozas, a municipality near Madrid.

RFEF organizes the national cup competitions (Copa de S.M. el Rey and Supercopa de España) and administers the competition committee of the Campeonato Nacional de Liga (Primera División and Segunda División), including the handling of the trophy, even though they are organized by LaLiga. It organizes the rest of national league tiers: Primera Federación (3rd), Segunda Federación (4th) and Tercera Federación (5th). It also rules all the female national competitions except the top league, Liga F.

Iker Casillas Fernández (Spanish pronunciation: [ˈikeɾ kaˈsiʎas feɾˈnandeθ]; born 20 May 1981) is a Spanish former professional footballer who played as a goalkeeper and currently works as a football commentator. Dubbed "San Iker" ("Saint Iker"), he is considered to be one of the greatest goalkeepers of all time. He is known for his athleticism, quick reactions and outstanding shot-stopping ability. Having spent the majority of his career at Real Madrid, Casillas is one of the few players to achieve over 1,000 professional career matches, and also holds the record for the most clean sheets for the Spain national team. Currently, he works for RTVE, Movistar Plus+ and Azteca Deportes.

At club level, Casillas started his career with the Real Madrid youth team, eventually gaining promotion to the main team in 1999, where he became the youngest goalkeeper to play in the final of the Champions League, and to win the title, at 19 years and four days. Casillas became the first choice goalkeeper at Real Madrid, winning two Champions Leagues and La Liga titles in his first three seasons, establishing himself as one of the best goalkeepers in the world. During his highly successful career in Madrid, Casillas won all major club titles, including five La Liga titles, four Supercopa de España titles, two Copa del Rey titles, three UEFA Champions Leagues, two UEFA Super Cups, two Intercontinental Cups and the FIFA Club World Cup. After 25 years with Real Madrid, Casillas joined FC Porto in 2015 on a free transfer, where he won the Primeira Liga and a Supertaça Cândido de Oliveira title. While at Porto, he broke the record for most consecutive seasons played in the UEFA Champions League (20) and amassed the most appearances in the competition (177). He ended his playing career in February 2020, after almost a year on the sidelines following a heart attack he suffered during a training session with Porto in May 2019.