Italian club AC Milan achieved an impressive victory over host Red Bull Salzburg 4-0 in the Europa League, thanks to a hat-trick by Alphadjo Cisse.
The teenager was the star of the show in Austria, where he became the youngest Italian to score a hat-trick in a European competition, at the age of 19 years and 358 days.
Goncalo Ramos also scored for the Rossoneri, who had Filippo Terracciano sent off late in the game as they bounced back from defeat to Benfica in the opening match of the league stage.
Juventus, its competitor in the Italian League, achieved two wins from two matches, as it came from behind to beat Celta Vigo 2-1.
Nick Woltemade equalized for Juventus after Hugo Alvarez had given the hosts the lead, with the striker on loan from Newcastle United pounced on poor defending to score his second goal for the club.
Juventus completed the turnaround in stoppage time, with Randall Kolo Mwani heading home after a brilliant cross from Andrea Cambiasso.
The fortunes of the English Premier League teams were mixed. Sunderland needed a stoppage-time winner to beat Portuguese second division side Torense 2-1, while Bournemouth were more comfortable beating Sturm Graz 3-0. Crystal Palace failed to achieve a clean victory over the English teams, as they lost 3-2 to Lyon.
Scottish champions Celtic lost 4-1 to Benfica, and the result was similar in Poland when Lech Poznań lost 4-0 at home to Bayer Leverkusen.
Hoffenheim’s poor start to the season continued after they lost 3-2 at home to Besiktas, leaving the Bundesliga side without a point in the competition. Marseille also became without a goal after losing 1-0 at home to Olympiacos.
Their Ligue 1 rivals Rennes came from behind to beat OFI Crete 2-1, with Abdelhamid Ait Boudlal scoring the winner in the 90th minute. There was also late drama in Croatia, as Dion Beljo scored a penalty in the 96th minute to give Dinamo Zagreb a 1-0 win over Anderlecht.
In other matches, Real Sociedad earned its first point with a 1-1 draw with Union San Giloise.
Other Europa League results
Alkmaar 2-1 Hapoel Beer Sheva
Celje 0-3 Omonia
Sparta Prague 1-1 Lillestrom
Ferencvaros 2-1 Viktoria Plzeň
Jagiellonia 3-1 Ararat-Armenia
NEC Nijmegen 1-1 Levski Sofia
Paris star Monaco
Paris Broner scored Monaco’s first goal and provided the assist for Ansu Fati to score the second as the Ligue 1 side opened their Conference League campaign with a 2-1 win over CSKA Sofia.
Meanwhile, Atalanta scored three first-half goals to secure a 3-1 win over Paphos in a meeting between two teams that played in the Champions League last season, while Brighton & Hove Albion won 4-0 over Kaono Zalgiris.
Mohamed Salah scored in Trabzonspor’s 4-2 win over Kups, but there was disappointment for Dutch giants Ajax, who suffered a 2-1 defeat at Hajduk Split.
Freiburg, who reached the Europa League final last season, beat Jablonec 3-2, while Copenhagen achieved one of the most impressive results in the opening round of Conference League matches, beating Braga 3-0.
League results of other conferences
Egnatia 1-1 Central Jutland
Ghent 1-0 Aarhus
Lugano 3-2 Red Star Belgrade
Majalby 2-0 Inter Escalades
Panathinaikos 2-1 Borac Banja Luka
Riga 1-1 Kairat Almaty
Craiova 1-1 Getafe
Brann 2-1 Lincoln Red Imps
Hearts 1-1 Nordsjæland
St. Truiden 2-0 Iberia Tbilisi
Twente 1-0 Thun
