Inter Milan bagged their first win in the UEFA Champions League Group F with a 2-0 triumph over Borussia Dortmund at the San Siro Stadium in Milan.
Lautaro Martinez put Inter in front at the midway stage after beating the offside trap. Martinez missed a penalty late in the second half, but Antonio Candreva made the game safe two minutes from time.
FC Barcelona continued their upward trajectory in Group F with a narrow 2-1 win over Slavia Praha at the Sinobo Stadium.
Lionel Messi had the Catalans ahead with a third minute finish, but Praha levelled five minutes after halftime through Jan Boril before Peter Olanyika's own-goal saved the day for Ernesto Valverde's side seven minutes later.
Alex Oxlade-Chamberlain's double helped defending champions Liverpool to a 4-1 victory away to Genk in Group E.
Oxlade-Chamberlain put Liverpool ahead after two minutes before adding a second 57 minutes in the second half whilst Sadio Mane netted their third in the 77th minute.
Mohammed Salah added their fourth two minutes from conclusion, while Stephen Odey fired home the consolation from the bench a minute from full-time.
LOSC Lille remain winless in Group H after being held to a 1-1 draw at home to ten-man Valencia.
Denis Cheryshev gifted Los Che the breakthrough on 63 minutes, but following Mouctar Diakhaby's dismissal eight minutes to full-time, Lille upped momentum.
Nanitamo Ikone broke Spanish hearts right at the death with the equaliser, gifting Lille their first point of the season.
Napoli staged a dramatic 3-2 triumph away to Salzburg in Group E's other fixture at the Red Bull Salzburg Arena.
Dries Mertens had the Italians ahead on 17 minutes following an assist from Jose Callejon. Erling Braut Haland drew the home side level from the spot five minutes to halftime.
Mertens went on the double after 64 minutes with a far post execution from close range, which was cancelled by Haland on 72 minutes however Lorenzo Insigne found the winner the Serie A outfit a minute later.
Benfica collected their first win in Group G following a 2-1 triumph over Ligue 1 outfit Olympique Lyon in Lisbon.
Rafa Silva granted the Portuguese giants the front foot as early as the fourth minute.
Memphis Depay restored parity 20 minutes from full-time, but Pizzi ensured victory five minutes to the end.