Chelsea 4-4 Ajax Amsterdam
Chelsea came back from three goals behind to force a 4-4 draw in a remarkable eight-goal thriller against nine-man Ajax Amsterdam in a Group H tie at Stamford Bridge.
Ajax got the goals from two own goals conceded by Tammy Abraham and goalkeeper Kepa, while Quincy Promes and Donny van de Beek gave the Dutch side a 4-1 lead ten minutes after the break. However, the game turned around after two of their defenders, Daley Blind and Joel Veltman got second bookings in a space of a minute and were both sent off.
The Blues rallied to add to Jorginho's early goal, as Cesar Azpilicueta, a penalty scored by Jorginho for his brace and the equaliser by Reece James 16 minutes before time completed the comeback and Chelsea almost got the winner 12 minutes before time after Azpilicueta scored but the goal was disallowed for a handball inside the box in the build-up.
Borussia Dortmund 3-2 Inter Milan
Borussia Dortmund came from two goals down to edge Inter Milan 3-2 in a five-goal blitz in Group F at Signal Iduna Park.
Lautaro Martinez and Matias Vecino gave Inter a two-goal lead going to the break but Achraf Hakimi's brace and another goal from Julian Brandt in the second stanza gave Dortmund three points.
Liverpool 2-1 Genk
Liverpool climbed up to the top of Group E after a 2-1 win over Genk at Anfield.
Mbwana Samatta cancelled out Georginio Wijnaldum's opener for the Reds five minutes before the break, but Alex Oxlade-Chamberlain got the clinching goal for Jurgen Klopp's charges eight minutes after the break.
Napoli 1-1 Salzburg
Napoli missed the chance to top Group E after they were held to a 1-1 draw by Salzburg at Stadio San Paolo.
Erling Haaland got the opener for the visitors in the 11th minute but Hirving Lozano levelled matters for Carlo Ancelotti's men two minutes before the break.
Olympique Lyon 3-1 Benfica
Olympique Lyon went up to second in Group G after beating Benfica 3-1 at Groupama Stadium.
Joachim Andersen and Memphis Depay gave Lyon a 2-1 lead going to the break after cancelling out Haris Seferovic' strike, while Bertrand Traore sealed the result for the French side in the last minute.
Valencia 4-1 Lille
Valencia came from a goal down to thump Lille 4-1 in a Group H match at Estadio De Mestalla.
After Victor Osimhen broke the deadlock for Lille in the 25th minute, Valencia came back in the second stanza to net through Dani Parejo, an own goal from Adama Soumaoro, Geoffrey Kondogbia and Ferran Torres.