PSG vs. Barcelona showdown takes center stage.. and Bayern seeks revenge against Arsenal

None of these victories were more impressive than the 4-2 win over England's Manchester City in the second round, which extended their unbeaten streak in the Champions League to 12 matches (8 wins and 4 draws), putting them just one match away from their record set in 2013.

PSG leads the unified group and appears on track to write a new chapter in its history. They have also won their last four home matches in the tournament, scoring at least five goals in three of them.

For its part, Barcelona has achieved 11 wins in 11 matches this season after sweeping Real Betis 5-2 last Saturday, equaling a record by scoring at least three goals in nine consecutive matches.

Barcelona also set a new Champions League record by scoring four or more goals in four consecutive matches within the group or league stage.

It is no surprise that German coach Hansi Flick has the best scoring average per match (3 goals) among all Barcelona coaches who have led the team in five or more Champions League matches, but he also has the worst goals-conceded average (1.6 goals per match).

Barcelona is suffering from a record streak of 17 consecutive matches without keeping a clean sheet in the tournament, making their unbeaten record away from home in the last four European matches (3 wins and a draw) threatened in this encounter.

The two teams share the results of their 16 previous encounters equally, with six wins each and four draws.

After winning their last two meetings, PSG seeks to become the second team in the tournament's history to defeat Barcelona in three consecutive matches. However, the Parisian club has only won once in their last four home encounters against Barcelona at the "Parc des Princes" (one draw and two losses).

Bayern seeks revenge against Arsenal

Ousmane Dembélé has scored in both matches he played against his former club Barcelona since moving to PSG. He has also found the net in six consecutive Champions League matches, equaling the record for a French player.

As for Lamine Yamal, he seeks to become the second player in the competition's history to provide at least two assists in three consecutive matches. His tally of 12 goals in the tournament during his teenage years is behind only Kylian Mbappé (13 goals).

The Catalan club enters the match missing its international defenders, Frenchman Jules Koundé and Eric García, due to an injury to the former's left ankle and the latter's right thigh, while PSG's Portuguese left-back Nuno Mendes is out with a left thigh injury.

The Bavarian giant aims on Wednesday to kill two birds with one stone at its "Allianz Arena": to make up for its disappointing draw against host Viking of Norway (3-3), and then to take revenge on Arsenal.

The London club defeated Bayern 3-1 at the Emirates Stadium last November in the fifth round of the unified group stage.

Bayern enters the match buoyed by a crushing 6-1 win over Leipzig, while the Gunners struggled to overcome Nottingham Forest 1-0.

The "Gunners" enjoy a remarkable record at this stage, having suffered only two defeats in their last 32 matches in the group stage.

Liverpool and Real for a third win and City to recover

After two big away victories, Anfield will host another fiery European evening when Liverpool meets its guest Villarreal, who is also experiencing an upward trend in performance.

Liverpool regained its balance well after the heavy 0-3 home defeat to Manchester City in the league, as they defeated their hosts LASK of Austria 6-3 continentally and Brentford 2-1 domestically.

The two victories they achieved in the Champions League contributed to raising their tally to 19 wins in the last 22 matches (against three defeats).

As for Villarreal, they entered their last match against Italy's Napoli having lost seven consecutive matches in the Champions League. However, the team made a wonderful comeback and turned their deficit into a 3-1 victory.

Spain's Real Madrid seeks to exploit home advantage and the fans to achieve its third consecutive victory when it meets the wounded German side Leipzig, and thus boost its players' morale before the Clásico against Barcelona next Sunday.

The Royal Club achieved an exciting "remontada" against Roma by turning a 1-3 deficit into a 4-3 victory by scoring a hat-trick during the last seven minutes of regulation time at the Olympic Stadium.

Manchester City has a chance to regain balance following the harsh loss to PSG (2-4) in the last round when it hosts Greece's AEK Athens on Tuesday, and the same applies to Inter, the runner-up of the season before last, who is seeking to earn its first points when it hosts Ukraine's Shakhtar Donetsk following two consecutive losses.