Current Champions League winners Liverpool, began the defence of their title on a bad note, losing 2-0 to Napoli.
With the game looking to end goalless, the hosts were awarded a penalty with eight minutes left.
Dries Mertens stepped up and gave his side the lead from the spot.
In added time, Fernando Llorente pounced on a loose pass, to seal the win.
Rodrigo scored the only goal, as Valencia beat Chelsea 1-0 at Stamford Bridge.
The game between Borussia Dortmund and Barcelona ended 0-0, with Marcos Reus missing a penalty in the second half.
Ajax thrashed Lille 3-0, Inter Milan drew 1-1 with Slavia Prague and RB Leipzig won 2-1 at Benfica.
Read Also:👇🏾
Champions League: Real Madrid announces squad to face PSG [Full list]
Two Nigerian men die after drug they swallowed burst open in their stomach during a flight (video)
Moment Mike, Mercy and Omashola talked about Tacha having body odour (videos)
Hoodlums slaughter woman, two daughters in Edo
Woman poops on a supermarket floor then walked out as though nothing happened(Video)
Iyabo Ojo in big trouble with Sanwo Olu over N38m
South Africa may impose 10-year travel ban on evacuated Nigerians
Rare Zebra spotted in Kenya (photos)
Dino Melaye speaks on dumping PDP, returning to APC
