Spanish football expert Guillem Balague:

“This will be a fascinating encounter. They are both sides who are very similar. They like to build from the back and have an organiser or two in Gundogan and Kroos for Germany and Rodri and Pedri for Spain.

“They both have similar weaknesses with the full-backs going forward and space being left behind, while the centre-back pairings are not the strongest.

“With Spain we have seen a team who have adapted to anything thrown at them, and they have been improving.

“With Williams and Yamal having a youthful approach to games, they don’t mind if they don’t beat defenders, they just keep going.

“In Yamal they have the player of the tournament who has created the most amount of chances.

“There’s not much to be changed in the line-up. The debate is whether it will be Pedri, who was not great against Georgia, or Dani Olmo, who was sharp when he came on.

“There’s another possibility, sometimes Morata starts on the bench and Olmo starts as a false nine, and that could cause problems for Rudiger and whoever partners him in defence because they prefer to face a player with a fixed position.

“Former Germany goalkeeper Jens Lehmann said Spain look like an under-18s side because of our size but I think he knows we are a team that will be aggressive in the one-on-ones.”

German football expert Constantin Eckner:

“Belief has grown. There wasn’t much hype going into this in Germany for the tournament and for Germany, but that has grown.

“There was good and bad in the games against Switzerland and Denmark. Against Switzerland if they did not score in injury time then they would not win the group, so there is optimism as well as realism.

“Spain have been the team that has impressed the most so far with the way they have played. Germany have scored the most goals but the Scotland game was an outlier.

“One of the key battles will be Joshua Kimmich against Williams. Williams has been one of Spain’s main creator of chances.

“The other key duel will be Gundogan versus Rodri because Rodri is Spain’s controlling hand. He is such a strong counter-pressing player and that is why he needs to be contained and made to work and get in situations he is maybe not comfortable.

“Then of course Musiala will play against Dani Carvajal. The first two battles I mentioned were how Germany can contain Spain, but this one will be about how Spain can contain Germany.”

Andy Murray was given an emotional farewell after his final appearance at Wimbledon began with a straight-set defeat alongside older brother Jamie in the men’s doubles.

The two-time singles champion is playing at the All England Club for the last time before retiring later this year.

“It is hard because I want to keep playing, but I can’t,” Murray, who won Wimbledon in 2013 and 2016, told former BBC presenter Sue Barker on Centre Court.

“Physically it’s too tough now. I want to play forever. I love the sport.”

The Murray brothers arrived on to Centre Court – which had not hosted a first-round men’s doubles match since 1995 – to a standing ovation.

Another followed moments after they lost 7-6 (8-6) 6-4 to Australian pair John Peers and Rinky Hijikata.

A video montage of Andy Murray’s career was played on the big screen after the match, leaving the former world number one in tears as the thousands of fans showed their appreciation in an elongated ovation.

Murray’s parents Judy and Willie, his wife Kim and two of their daughters watched on.

The former world number one thanked his family, his team members over the years and the fans for their support over the years.

Fellow Grand Slam champions Novak Djokovic, Martina Navratilova, John McEnroe and Iga Swiatek applauded from the side of the court, alongside British players Dan Evans, Jack Draper and Cameron Norrie.

Murray is set to appear again later this week, having signed up to the mixed doubles with fellow British Grand Slam champion Emma Raducanu.

“It was obviously very special to play with Jamie, we’ve not the chance to do it before,” Murray, who won the first of his three major titles at the 2012 US Open, said.

“It was a race against time to get out here and physically it wasn’t easy but I’m glad we were able to do it one time together.”

Top seed Iga Swiatek reached the third round of the women’s singles with a tenacious straight-set win over Petra Martic on Centre Court at Wimbledon.

Croatian Martic pushed the Polish world number one in moments but lost her serve late in both sets in Swiatek’s 6-4 6-3 win.

She also needed a lengthy medical timeout for a back injury in the opening set.

Swiatek’s victory extended her formidable win streak to 21 matches.

The 23-year-old is a five-time Grand Slam winner, although she has struggled on grass in the past, and has never advanced beyond the quarter-finals at SW19.

Swiatek will face Yulia Putintseva in the third round with the Kazakh player upsetting Czech 27th seed Katerina Siniakova 6-0 4-6 6-2 earlier on day four.

Elsewhere in the women’s draw, American fifth seed Jessica Pegula became the highest-ranked casualty at this year’s singles when she was beaten by world number 42 Wang Xinyu.

The Chinese player won 6-4 6-7 (7-9) 6-1 on court three to set up a third-round tie with Britain’s Harriet Dart.

Pegula had looked in formidable form on grass, reaching the final of Eastbourne and winning her first-round tie at Wimbledon in just 49 minutes.

Caroline Garcia, the 23rd seed from France, was also knocked out, losing 6-3 3-6 6-4 to world number 97 Bernarda Pera of the United States.

But plenty of other seeds recorded dominant straight-set wins on a wind-affected day in SW19.

Elena Rybakina, champion in 2022, beat German Laura Siegemund 6-3 3-6 6-3.

The Kazakh player will next face former world number one Caroline Wozniacki in the next round.

The Dane, 33, beat Canadian 30th seed Leylah Fernandez 6-3 2-6 7-5.

Ons Jabeur, runner-up at the past two Wimbledons, dispatched American Robin Montgomery 6-1 7-5.

The Tunisian 10th seed will take on 21st seed Elina Svitolina in the third round after the Ukrainian overcame German Jule Niemeier 6-3 6-4.

American 11th seed Danielle Collins beat Hungary’s Dalma Galfi 6-3 6-4 and will take on 20th seed Beatriz Haddad Maia next after the Brazilian benefited from a walkover.

Madison Keys, a quarter-finalist last year’s, beat China’s Wang Yafan 6-2 6-2, while 2017 French Open champion Jelena Ostapenko defeated Ukraine’s Daria Snigur 6-3 6-0.