Life comes at you fast. So, too, does the Champions League this season, as a rearranged fixture list sees three matchdays in the group stage take place in as many weeks. 

The opening round of fixtures did not disappoint, providing plenty of goals and also the odd surprise. 

Perhaps the most shocking result of all was Real Madrid losing at home to Shakhtar Donetsk, and both clubs are back in action on Tuesday. 

Bayern Munich are also on duty as they head to Moscow, while Midtjylland will be hoping they can pull off the mother of all upsets when they visit Merseyside to play Liverpool. 

Lokomotiv Moscow v Bayern: Holders head on their travels

The reigning champions opened their defence in style last week, thrashing Atletico Madrid 4-0 at the Allianz Arena. Now they face Lokomotiv in Europe for the first time since a UEFA Cup tie in the 1995-96 season. 

Bayern will be aiming to extend a club-record run of 13 away games without defeat, their last loss on the road coming against Paris Saint-Germain in September 2017. They have won 10 on their travels since, while have only lost once in 14 Champions League meetings with Russian teams. 

Robert Lewandowski scored nine away goals in the Champions League last term, the joint-most by a player in a single edition of the competition alongside Cristiano Ronaldo in 2013-14. 

Shakhtar v Inter: Lukaku the one to watch for hosts

Shakhtar arguably pulled off the result of matchday one with victory in Madrid, though they have never managed to beat Inter in three previous meetings (D1 L2). This, though, will be the first Champions League fixture between the clubs. They have also failed to register a home win in their last six attempts in the competition, stretching back to a 2-1 triumph over Roma in February 2018.

The key to success for the hosts will surely be stopping Romelu Lukaku. The Belgian is on the longest run of scoring in consecutive European appearances for Inter (nine games), while he has been directly involved in 15 goals during that period (11 goals and four assists).

Lukaku has scored in each of his last three Champions League games for the Nerazurri; he could become just the fifth player to score in four in a row for the Italian side, a feat previously achieved by Christian Vieri, Hernan Crespo, Samuel Eto'o and Lautaro Martinez.

Borussia Monchengladbach v Real Madrid: Benzema may be key for Zidane

Can Zinedine Zidane's squad bounce back? A Clasico triumph over rivals Barcelona has helped silence the critics - for now at least.

Madrid are unbeaten in their last nine matches against German teams (W6 D3), a run that started after a 2-0 defeat to Wolfsburg in April 2016. They have won four of their last five away fixtures in the group stages, too.

Karim Benzema, who did not start against Shakhtar, has been directly involved in 19 goals in his last 21 Champions League games when named in the XI, netting 14 goals and providing five assists.

Liverpool v Midtjylland: Salah chases record as Danes visit Anfield

Jurgen Klopp's Reds play their first European home game since a 3-2 reverse to Atletico in March that ended their hopes of reaching a third successive final. That is their only setback in the last 26 European fixtures at Anfield.

There is hope for the Danish side in that Liverpool have failed to keep a clean sheet in their previous four home Champions League fixtures, though the makeshift pairing of Joe Gomez and Fabinho did keep Ajax at bay in Amsterdam in matchday one. Yes, the same Ajax who won 13-0 at the weekend.

As for the hosts, Mohamed Salah is two goals away from equalling Steven Gerrard's club record of 21 in the European Cup/Champions League.

Other fixtures:

Marseille v Manchester City:

8 - City games usually provide goals; both teams have scored in each of their last eight Champions League fixtures. They are on their longest wait for a clean sheet in the competition since between February 2015 and 2016 (nine matches).

32 - Dimitri Payet is still looking for his first goal in the competition. He has attempted 32 shots without scoring (21 for Lille and 11 for Marseille).

Atalanta v Ajax:

9 - Ajax are unbeaten in their last nine away games in the Champions League (W6 D3), winning six of their last seven. Only in two of their 15 previous Champions League campaigns have the Dutch side started with two consecutive defeats (2004-05 and 2012-13).

10 - Only Barcelona (11) had more shots on target during the opening round of fixtures this season than Atalanta's tally of 10 in the 4-0 thrashing of Midtjylland.

Porto v Olympiacos:

6 - These clubs have previously faced each other on six occasions in all European competitions, with Porto winning twice. Both of those victories came at home (D1 L3).

12 - Olympiacos have lost 12 of their last 14 away games in the Champions League (W2), losing the last seven in a row and shipping at least two goals in each of those defeats (21 in total).

Atletico Madrid v Salzburg:

1 - Dominik Szoboszlai could become the youngest Hungarian player to score in consecutive Champions League games (aged 20 years and two days), having found the net in Salzburg's 2-2 draw with Lokomotiv.

8 - Atletico are unbeaten in all eight of their previous meetings with Austrian teams in European competition (W7 D1). Having lost their last two European fixtures, they will be looking to avoid suffering three consecutive defeats for the first time in Champions League history.