In the 1998–99 UEFA Champions League group stage, Bayern defeated Barca in both matches, en route to reaching the final hosted by Camp Nou which they lost to Manchester United, allowing United to accomplish the continental treble (Manchester United was also in the same group stage, drawing all their matches against Bayern and Barca).

Bayern and Barca had met in four knockout ties since 2008–09 UEFA Champions League, which yielded 26 goals prior to this game.
It is interesting that each time the eventual winner of the Bayern-Barca knockout tie would go on not only to win the UEFA Champions League, but also complete the continental treble, which occurred in 2009, 2013, 2015, and 2020.
Bayern's Thomas Müller was a reserve in 2009, but started all subsequent Bayern-Barca matches.

Barcelona won 5–1 on aggregate in the 2008–09 UEFA Champions League quarter-finals.
Barca's 4–0 win at Camp Nou in the first leg, with all goals scored in the first half, led Bayern Munich president Franz Beckenbauer to remark "What I saw in the first half is, without doubt, the worst football in Bayern's history".
Barca manager Pep Guardiola was sent off in the first leg for protesting a yellow card given to Lionel Messi, and had to watch the second leg from the stands.
This defeat as well as an earlier 5–1 loss in a Bundesliga match eventually led to the sacking of Bayern manager Jürgen Klinsmann.

The semi-finals of the 2012–13 competition saw Arjen Robben and Thomas Müller inspire Bayern to a 7–0 aggregate victory, including a 3–0 win at the Camp Nou which, to date, was Barcelona's last home defeat in European competition.

The semi-finals of the 2015 saw Lionel Messi and Neymar as the key players in a 5–3 aggregate win over Bayern, a 3–0 win in Camp Nou and then a 3–2 defeat at the Allianz Arena.
Bayern's manager at the time was Pep Guardiola, who had previously managed Barca from 2008 to 2012, including the 2008–09 Champions League quarter-final against Bayern.
In the 1998–99 UEFA Champions League group stage, Bayern defeated Barca in both matches, en route to reaching the final hosted by Camp Nou which they lost to Manchester United, allowing United to accomplish the continental treble (Manchester United was also in the same group stage, drawing all their matches against Bayern and Barca).
Bayern and Barca had met in four knockout ties since 2008–09 UEFA Champions League, which yielded 26 goals prior to this game. It is interesting that each time the eventual winner of the Bayern-Barca knockout tie would go on not only to win the UEFA Champions League, but also complete the continental treble, which occurred in 2009, 2013, 2015, and 2020. Bayern's Thomas Müller was a reserve in 2009, but started all subsequent Bayern-Barca matches.
Barcelona won 5–1 on aggregate in the 2008–09 UEFA Champions League quarter-finals. Barca's 4–0 win at Camp Nou in the first leg, with all goals scored in the first half, led Bayern Munich president Franz Beckenbauer to remark "What I saw in the first half is, without doubt, the worst football in Bayern's history". Barca manager Pep Guardiola was sent off in the first leg for protesting a yellow card given to Lionel Messi, and had to watch the second leg from the stands. This defeat as well as an earlier 5–1 loss in a Bundesliga match eventually led to the sacking of Bayern manager Jürgen Klinsmann.
The semi-finals of the 2012–13 competition saw Arjen Robben and Thomas Müller inspire Bayern to a 7–0 aggregate victory, including a 3–0 win at the Camp Nou which, to date, was Barcelona's last home defeat in European competition.
The semi-finals of the 2015 saw Lionel Messi and Neymar as the key players in a 5–3 aggregate win over Bayern, a 3–0 win in Camp Nou and then a 3–2 defeat at the Allianz Arena. Bayern's manager at the time was Pep Guardiola, who had previously managed Barca from 2008 to 2012, including the 2008–09 Champions League quarter-final against Bayern.
FC Barcelona 2–8 FC Bayern Munich