A season-by-season record of Red Star Belgrade's league performances:
The UEFA Europa League, abbreviated as UEL, is an annual football club competition organised since 1971 by the Union of European Football Associations (UEFA) for eligible European football clubs. It is the second-tier competition of European club football, ranking below the UEFA Champions League and above the UEFA Conference League.
In European football, the UEFA coefficients are statistics based in weighted arithmetic means used for ranking and seeding teams in club and international competitions. Introduced in 1979 for men's football tournaments, and after applied in women's football and futsal, the coefficients are calculated by UEFA, who administer football within Europe, and the Asian parts of some transcontinental countries.
The 1999–2000 UEFA Cup season was the 29th edition of the UEFA Cup competition. The final took place at Parken Stadium in Copenhagen and was won by Galatasaray, who defeated Arsenal in the final. The game was scoreless through the first ninety minutes and stayed that way through thirty minutes of extra time. The match went on to penalty kicks in which Gheorghe Popescu scored the winning goal to win the cup. Galatasaray won the cup without losing a single game. The competition was marred by violence involving Turkish and English hooligans in the semi-finals and the final, in particular the fatal stabbings of Leeds United fans Kevin Speight and Christopher Loftus by Galatasaray fans in Istanbul.
The 2005–06 UEFA Cup, the 35th edition of the UEFA Cup, was won by Sevilla, beating Middlesbrough in the final. It was the first victory for Sevilla in a European competition, and the first appearance by Middlesbrough in a European final. The final took place at Philips Stadion, in Eindhoven, Netherlands. The match was refereed by Herbert Fandel. Middlesbrough sealed their place in the final on the back of two dramatic comebacks. In the quarter-finals they beat FC Basel of Switzerland 4–3 on aggregate, this put them into the semi–final to face Steaua București. The first leg finished 1–0 to Steaua, and the second leg finished 4–2. Sevilla went on to defend the trophy the following year.
The 1998–99 UEFA Champions League was the 44th season of the UEFA Champions League, Europe's premier club football tournament, and the seventh since it was renamed from the "European Champion Clubs' Cup" or "European Cup". The competition was won by Manchester United, coming back from a goal down in the last two minutes of injury time to defeat Bayern Munich 2–1 in the final. Teddy Sheringham and Ole Gunnar Solskjær scored United's goals after Bayern had hit the post and the bar. They were the first English club to win Europe's premier club football tournament since 1984 and were also the first English club to reach a Champions League final since the Heysel Stadium disaster and the subsequent banning of English clubs from all UEFA competitions between 1985 and 1990. It was the first time since 1968 that Manchester United won the Champions League, giving them their second title.
Campionato Sammarinese di Calcio is the highest competition for football clubs located at the only level of the Sammarinese football league system and has been operating since the 1985–1986 season. Currently, Campionato Sammarinese di Calcio is ranked last (55th) among European leagues according to UEFA's league coefficient, which is based on the performance of Sammarinese clubs in the Champions League, Europa League and the Conference League.
The 2006–07 UEFA Cup was the 36th edition of the UEFA Cup, Europe's second-tier club football tournament. On 16 May 2007, at Hampden Park, Glasgow, Scotland, Sevilla won their second consecutive UEFA Cup, defeating Espanyol 3–1 on penalties after the match finished 2–2 after extra time. Sevilla became the second side to win the competition for two consecutive seasons, following the hiatus of the original record holder Real Madrid achieved in 1985 and 1986.
The 2008–09 UEFA Cup was the 38th season of the UEFA Cup football tournament. The final was played at the Şükrü Saracoğlu Stadium, home ground of Fenerbahçe, in Istanbul on 20 May 2009. It was the final season to use the UEFA Cup format; starting in 2009, the competition was known as the UEFA Europa League. Ukraine's Shakhtar Donetsk beat Werder Bremen 2–1 after extra time to win their first European title. Zenit Saint Petersburg were the defending champions but were eliminated by Udinese in the Round of 16.
The 2014–15 UEFA Europa League was the 44th season of Europe's secondary club football tournament organised by UEFA, and the sixth season since it was renamed from the UEFA Cup to the UEFA Europa League.
The 2015–16 UEFA Champions League was the 61st season of Europe's premier club football tournament organised by UEFA, and the 24th season since it was renamed from the European Champion Clubs' Cup to the UEFA Champions League. Barcelona were the title holders, but were eliminated by Atlético Madrid in the quarter-finals.
The 2017–18 UEFA Champions League was the 63rd season of Europe's premier club football tournament organised by UEFA, and the 26th season since it was renamed from the European Champion Clubs' Cup to the UEFA Champions League.
The 2018–19 UEFA Champions League was the 64th season of Europe's premier club football tournament organised by UEFA, and the 27th season since it was renamed from the European Champion Clubs' Cup to the UEFA Champions League. For the first time, the video assistant referee (VAR) system was used in the competition from the round of 16 onward.
The 2019–20 UEFA Champions League was the 65th season of Europe's premier club football tournament organised by UEFA, and the 28th season since it was renamed from the European Champion Clubs' Cup to the UEFA Champions League.
The 2020–21 UEFA Europa League was the 50th season of Europe's secondary club football tournament organised by UEFA, and the 12th season since it was renamed from the UEFA Cup to the UEFA Europa League.
The 2020–21 UEFA Champions League was the 66th season of Europe's premier club football tournament organised by UEFA, and the 29th season since it was renamed from the European Champion Clubs' Cup to the UEFA Champions League.
The 2021–22 UEFA Champions League was the 67th season of Europe's premier club football tournament organised by UEFA, and the 30th season since it was renamed from the European Champion Clubs' Cup to the UEFA Champions League.
The 2023–24 UEFA Champions League was the 69th season of Europe's premier club football tournament organised by UEFA, and the 32nd season since it was renamed from the European Champion Clubs' Cup to the UEFA Champions League.
The 2022–23 UEFA Champions League was the 68th season of Europe's premier club football tournament organised by UEFA, and the 31st season since it was renamed from the European Champion Clubs' Cup to the UEFA Champions League.
The 2022–23 UEFA Europa Conference League was the second season of the UEFA Europa Conference League, Europe's tertiary club football tournament organised by UEFA.