Dries Mertens’ penalty and a late Fernando Llorente goal condemned Liverpool to defeat in their Group E Champions League opener against Napoli.
Belgian forward Mertens scored from the penalty spot after Liverpool defender Andy Robertson was judged to have fouled Jose Callejon.
Former Tottenham forward Llorente then capitalised on a mistake from Virgil van Dijk in stoppage-time to roll the ball past Liverpool keeper Adrian.
Chelsea’s return to the Champions League ended in disappointment as Ross Barkley missed a late penalty that ensured Valencia claimed victory at Stamford Bridge.
Frank Lampard’s first game as a manager in the tournament he won as a player with Chelsea in 2012 turned into a night of frustration as Valencia took advantage of slack marking at a free-kick for Rodrigo to score the winner on 74 minutes.
Chelsea, who lost in-form youngster Mason Mount to injury early on, had the chance to rescue a point when referee Cuneyt Cakir awarded a penalty for handball after consulting VAR when Daniel Wass blocked Fikayo Tomori’s header.
Barkley had only come on as a substitute eight minutes earlier but insisted taking the spot-kick instead of the Blues’ regular taker Jorginho and Willian, who argued his own case to take it before relenting.
It was a tight and tense encounter with chances at a premium and a tricky Group H, which also includes Lille and last year’s semi-finalists Ajax, has got even tougher for Chelsea after starting their campaign with a damaging home loss.
Marc-Andre ter Stegen saved Marco Reus’ penalty as Barcelona held Borussia Dortmund to a goalless draw in their Champions League opener.
The Germany international also denied Reus with a smart double save as Dortmund dominated the second half.
Julian Brandt did beat Ter Stegen late on but his effort hit the bar.
Barcelona gave a Champions League debut to 16-year-old Ansu Fati but created little, despite Lionel Messi’s first appearance of the season off the bench.
Dortmund denied by inspired Ter Stegen
Signal Iduna Park is one of the most atmospheric stadiums in Europe and the Dortmund fans, complete with their famous ‘Yellow Wall’, gave the players a raucous welcome befitting of a Champions League final rather than a group game.
That noise only increased as the game wore on, as a vibrant and dynamic Dortmund side became increasingly dominant – but they will rue a man-of-the-match display by Barca goalkeeper Ter Stegen.
Jadon Sancho, who scored his first goals for England during the international break, again formed part of a trio alongside Reus and Thorgan Hazard just behind lone striker Paco Alcacer, who has scored in every game for club and country this season.
Hazard created the best chance of the first half when he went on mazy run from the left before playing in Reus, whose low effort was well blocked by the impressive Ter Stegen.
Twelve minutes into the second period, Sancho won Dortmund a penalty when Nelson Semedo trod on his foot as the 19-year-old turned smartly near the byeline.
Reus got a good contact on his spot-kick, but Ter Stegen dived full stretch to his left to palm the ball away before calmly claiming the rebound as the ball bounced near the goalline.
Lucien Favre’s side continued to pour forward, with Reus and Alcacer wasting good opportunities, but they could not find their way past an inspired Ter Stegen.
A draw against the five-time European champions is not normally considered a poor result, but the reaction of the Dortmund players at the final whistle suggests they saw this an opportunity missed.
Inter Milan substitute Nicolo Barella scored a stoppage-time equaliser to deny Slavia Prague just their second Champions League group win.
The Czech side have reached the group stage for the second time but it was Stefan de Vrij and Danilo D’Ambrosio who went close for the Serie A leaders.
Yet Slavia deserved the lead when Peter Olayinka opened the scoring.
But early in the eight minutes of added time, Barella bundled in after Stefano Sensi’s free-kick hit the crossbar.
Slavia goalkeeper Ondrej Kolar then produced a fine reflex save to keep out a Romelu Lukaku header right at the end, although the flag had already gone up for offside.
Three-time European champions Inter should have taken the lead from two Sensi free-kicks, with De Vrij heading over while fellow defender D’Ambrosio headed straight at Kolar.
Inter striker Lautaro Martinez also shot narrowly wide in the first half while keeper Samir Handanovic was fortunate to be awarded a free-kick after being caught in possession in his own six-yard box by Nigerian forward Olayinka, 23.
Kolar blocked a close-range shot by Martinez at the start of the second half, and Slavia replied as Nicolae Stanciu tested Handanovic with a 20-yard strike before firing over from a similar range.
The Czech champions then produced a fine move down the right, resulting in Olayinka cutting the ball back for Jaroslav Zeleny, and although Handanovic saved the substitute’s low shot at his near post, Olayinka fired the rebound into the roof of the net.
Lukas Masopust spurned a great chance to double Slavia’s lead as he fired over and Inter barely threatened a leveller until on-loan Cagliari midfielder Barella, 22, volleyed into the ground and the ball somehow bounced through a crowd of bodies and into the Slavia net.
