Cristiano Ronaldo holds his head in his hands after receiving a red card. Photo: Juan Carlos Cardenas/EPA

VALENCIA – Juventus believe they can win the Champions League with Cristiano Ronaldo, but they had to start by beating Valencia 2-0 without him after he was controversially sent off on his debut in the competition for the Italian champions on Wednesday.

A tearful Ronaldo left the pitch in disbelief in the 29th minute, having aimed a petulant, but seemingly harmless, kick at Valencia defender Jeison Murillo, prompting referee Felix Brych to brandish the red card.

Ronaldo dropped to the floor like the entire tournament was lost, but Juve showed more composure, Miralem Pjanic scoring twice from the penalty spot to clinch a comfortable win. 

Valencia were even awarded a third spot-kick of the match deep into injury time, but Daniel Parejo missed.

It remains to be seen how Uefa judge Ronaldo’s offence, and dissent, but he is set to miss the next European game at home to Young Boys on October 2.

After that comes the more threatening double-header against Manchester United.

Valencia’s fans celebrated Ronaldo’s dismissal at the Estadio Mestalla like a goal had been scored but, in truth, their team missed a golden chance to gain a foothold in Group H.

Instead, Ronaldo’s absence had little effect. The Italians won and won with ease.

Ronaldo started brightly, with an ambitious shot from distance, and then had a hand in teeing up two glorious chances, crossing for Federico Bernardeschi to set up Sami Khedira, before misfiring into the path of Mario Mandzukic six yards out.

Each fluffed their lines.

Valencia had openings too, but lacked punch. Michy Batshuayi, on his first start for the club, twisted round Giorgio Chiellini but was denied at the near post.

Then the moment the match will be remembered for. Ronaldo let frustration get the better of him and Murillo made the most of it, falling instantly.

Brych was convinced.

But instead of capitalising, Valencia twice capitulated. First, Parejo missed a high ball and kicked Joao Cancelo before Murillo took a risk by bundling down Leonardo Bonucci.

Pjanic stepped up for both spot-kicks and scored both, the first on the stroke of half-time, the next six minutes after.

Valencia probed, but even when Daniele Rugani collided with Gabriel for a third penalty, Parejo’s shot was saved by Wojciech Szczesny.

There was never any hint of a comeback.

Meanwhile, Gareth Bale scored as Real Madrid moved on from the departures of Cristiano Ronaldo and Zinedine Zidane with a 3-0 win over Roma to confidently launch their pursuit of a fourth successive Champions League title.

Isco curled in a terrific free kick just before halftime at the Santiago Bernabeu, with Bale powering in a second and Mariano Diaz striking late as Real made a convincing start to their Group G campaign.

Champions League Results

Young Boys 0-3 Manchester United

Real Madrid 3-0 Roma

Manchester City 1-2 Lyon

Benfica 0-2 Bayern Munich

Valencia 0-2 Juventus

Viktoria Plzen 2-2 CSKA Moscow

Ajax Amsterdam 3-0 AEK Athens

Shakhtar Donetsk 2-2 Hoffenheim