The round witch is back to occupy the old continent tonight and force the fans of the world to the maximum to adjust their hours on the timing of games, when the new season of the Champions League begins.

Although the whistle of the tournament starts tonight in the first group stage matches, fans of the "round skin" are on a date with heavy caliber clashes between the top continents.

The start with last season's champions Liverpool and their upcoming Group E clash against hosts Napoli, a stubborn opponent who was close to being ousted from the group stage last season.

The match between the two teams at the end of the group stage last season, which ended with the victory of "Lever" 1-0, was the real turning point that helped the English team to continue their journey to the podium with their sixth title.

Napoli beat Liverpool, who were beaten by all three games away in the group stage, with a 1-0 win in the first leg of the group stage last season.

When the draw took place in August, Juergen Klopp singled out Napoli as a major threat to his team in the group, which includes Belgium's Genk and Red Bull Salzburg.

This time Liverpool are without Alison as they continue their treatment of calf injury and Adrian has the chance to make his debut in the Champions League this season.

Adrian has performed well in the Premier League so far, with Liverpool having won all five of the Premier League games so far.

Saturday's game was the first of seven games for Liverpool in 22 days, and Klopp knows he needs to rotate and switch between his players to avoid stress.

In the same group tonight Salzburg host Genk, and the two teams know the difficulty of their task in hijacking the card to qualify for the final price of the continental mother tournament.

In Group F, described as the "Group of Death", Barcelona visit Dortmund, and the two teams have won overwhelming victories in the domestic championship.

The two sides meet for the first time in the Champions League, but it will be the second European confrontation between them after the European Super Cup in 1997, tied in Dortmund 1-1 and Barcelona won the aggregate 3-1 after winning two goals in the Camp Nou.

Dortmund thrashed Bayer Leverkusen 4-0 on Saturday in the Bundesliga, while Barcelona won a big 5-2 victory over Valencia in La Liga.

Dortmund have a strong attacking line led by former Spain international Paco Alcacer, who has scored in all eight games this season for his club and country. England striker Jadon Sancho, international giants Marco Rios and Julian Brand are also on the offensive, but Dortmund have many weaknesses in the defense.

Dortmund certainly need a better balance between tough defense and quick counterattacks, although Argentine Lionel Messi, who is recovering from injury but has accompanied the team on his trip to Germany.

The big win against Valencia was not the only win for the Catalans, but the brilliant performance of young player Anso Fati - who scored one goal and made another - from several gains made in this game.

In the same group, Serie A leaders Inter Milan host nine points from three games, Slavia Prague, the weakest of the group.

In Group H, Chelsea host Champions League winners Wolverhampton's big win last Saturday in the Premier League 5-2, Valencia shocked by the surprise sacking of former coach Marcelino and a crushing loss to Barca 2-5 in La Liga.

Chelsea's top scorer, Lampard, is set to make his debut in the Champions League since he replaced Maurizio Sarri.

Lampard is counting on a young generation of players to make a remarkable performances this season in front of them, 21-year-old Tammy Abraham, who scored a hat-trick against Wolverhampton and tops the Premier League scorers and 20-year-old midfielder Mason Mount, who scored one of his five goals.

Ajax Amsterdam, who came out of the semi-finals and were just around the corner, will make their debut in the group stage against Lille. The Dutch team, which has sold a number of stars, has struggled hard to beat Cypriot Apoel in the preliminary round.

In Group G, which is regarded as a group in the Europa League due to the modest levels of their teams, Lyon hosts Zenit of Russia and Leipzig of Germany visit Benfica.