UEFA Champions League 2019/20 action resumes this week, with matchday one matches set to be played on Tuesday and Wednesday 17th and 18th September across various grounds.
The opening round of matches promises fireworks, with key fixtures pitting Europe's elite teams set to light the competition.
We take a look at some of the key matches to look forward to;
Liverpool vs Napoli
Liverpool will begin the defence of their title with a tricky fixture at the Stadio San Paolo against Napoli, in what will be a tight encounter.
The two teams faced each other last season, with each exchanging 1-0 home wins. The Reds were handed a paltry 2,558 tickets for the match, and will most likely be in for a long night from the home crowd.
PSG vs Real Madrid
Paris Saint-Germain will hope to make a good start to this season's Champions League campaign against one of the favourites when they host Real on Wednesday night.
Thomas Tuchel's side has had poor runs in recent seasons in the competition, and have failed to make it past the Round of 16 for the last three seasons.
They will miss the services of key players Edinson Cavani, Kylian Mbappe and Neymar, who is serving a three-match ban from last season.
Real Madrid won the 2-1 the last time the two sides met at the grounds.
Atletico Madrid vs Juventus
Maurizio Sarri will lead his new side in the Champions League with a tough trip to Spain to take on Atletico on Wednesday night, in one of the key highlight fixtures.
The Old Lady of Turin will be hoping to go a step further from the last two seasons, where they failed to make it past the quarters.
They face a formidable Madrid side that is hard to face while playing at home, and it promises to be a cracker of a match.
Chelsea vs Valencia
Frank Lampard will make his first managerial appearance in the Champions League when he leads his charges against the Spanish side at the Stamford Bridge on Tuesday night.
Chelsea will be making a return to Europe's premier club competition having missed out last season. Valencia, on the other hand, took part last season but failed to advance past the group stages as they finished behind Juventus and Manchester United.
They suffered a 5-2 defeat at the hands of Barcelona over the weekend, with Chelsea recording a similar win against WOlves.
Dortmund vs Barcelona
Borussia will go into the clash against one of the competition's favourites on the back of a 4-0 win over Bayer Leverkusen in the Bundesliga on Saturday and will fancy their chances.
They will be buoyed by the that they have made it into the round of 16 in five of their last six participations and can fancy finishing as runners up in case Barcelona take the top spot.
The Spanish side, on the other hand, have not been at heir best this season, but convincingly beat valencia 5-2 on Saturday in a La Liga match.
They will also welcome back Lionel Messi, who has been recovering from a calf injury.