Great Britain's Heather Watson has lost in the first round of the women's singles, going down 7-6 (7-5) 6-3 in one hour and 49 minutes to Germany's Anna-Lena Friedsam.

Image source, Getty Images

If you're just waking up this is what has happened so far:

• Helen Glover and Polly Swann are through to the women's pair rowing semi-final.
• China's Yang Qian wins the first gold of Tokyo 2020 after winning the women's 10m rifle competition.
• Andy Murray is in doubles action.
• The men's road cycling race is under way with Geraint Thomas among the Team GB riders.

Sir Andy Murray and partner Joe Salisbury have been given a tough task first up in the men's doubles.

They're facing second seeds Pierre-Hugues Herbert and Nicolas Mahut of France, who have won a handy five Grand Slam doubles titles together.

The Brits recovered from 0-30 down in their opening game and Murray has just held serve to keep their noses in front at 3-2.

Chris Boardman
Olympic cycling champion on BBC TV

Image source, Rex Features

The width of these roads, it's not actually easy to see how steep it is. It's quite a steep descent.

These are quite steep roads. Another 5km down the road and it starts to become more of a consistent, steady climb.

Then it just ramps up and ramps up, before they reach the head of the pass.

Image source, Getty Images

Olympics Games executive director Christophe Dubi says athletes will be punished if they ignore anti-covid measures.

Most of the Kyrgyzstan and Tajikistan team members, along with Pakistan’s two flagbearers, did not wear masks at the opening ceremony.

"It’s really important how we go on message constantly to remind people how important it is to use the mask," Dubi said at this morning’s IOC briefing.

"This was something that was done yesterday, it was repeated to the Chef de Missions and we will continue to repeat this.

"Now if you have blatant behaviours that are absolutely unbearable we will definitely take action, but it starts by informing and repeating this information so that we don’t see too many people without masks, that’s absolutely clear."

Katherine Birkett: I've already been on my exercise bike pretending I'm doing the keirin and the road race. Last year, as a lockdown challenge & to fight Type 2 Diabetes, I exercise-biked the distance of the London Marathon in 2 hrs 9 mins 40 secs!

Headteacher Chat: Am I the only person watching the Olympics?

So, we have live badminton, beach volleyball, boxing, cycling, hockey, judo, table tennis, taekwondo and volleyball taking place right now.

And Andy Murray has just got under way in the mixed doubles tennis.

The Tokyo Olympics are well and truly up and running.

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Men's doubles Ben Lane and Sean Vendy are in action against Indonisia's Marcus Gideon and Fernaldi Suka in the next few minutes.

Vendy, who spent his early years in the Orkneys before moving to Milton Keynes aged seven, was a torch-bearer at London 2012 while the pair are coached by 2004 mixed doubles bronze winner Nathan Robertson.

Lane won mixed team bronze with England at the 2018 Commonwealth Games.

Image source, Reuters

Great Britain's Heather Watson has lost the first set of her first-round match against Germany's Anna-Lena Friedsam.

Friedsam took a tight opener that lasted an hour and five minutes 7-6 (7-5) on a tie-break.

Loads of boxing taking place in the Kokugikan Arena over the next few hours. Watch out later for Team GB's Karriss Artingstall (09:15 BST) and Peter McGrail (10:03).

Artingstall is a gunner in the Royal Artillery and is the first female in the British Armed Forces to compete at the Olympics.

Liverpool-born McGrail is a strong medal hope and won Commonwealth Games gold in 2018.

Want to know how hard these athletes are at the Olympics?

Jamaican 1500m runner Aisha Praught-Leer says she will still be competing at Tokyo 2020 despite tearing her meniscus "off the bone" in a freak training accident. The 31-year-old picked up the injury on Sunday and was told she would need surgery.

However, Praught-Leer has decided to delay that until after the Games to enable her to compete. "I will line up in Tokyo," she wrote on Instagram., external

Hard as nails.

Image source, aishapraughtleer

EYFS_Manager: I am very excited about the Olympics. My sofa may feel less enthusiastic. Triathlon weekend will be radio silence from me, the kids have their instructions.

Image source, Getty Images

More from Helen Glover, who is hoping to secure a third Olympic gold medal after making a comeback to the sport: "Massive thank you to everyone back home.

"Both Polly and I have been motivated and touched by everyone's support. It's meant a lot - and it's meant a lot that our journey has meant something.

"And getting to this next round means it's another chance for us to go out there and see if we can progress the way we want to.

"We're doing it for all those people who have stayed up, carried us and support us the last 18 months.

Image source, PA Media

Slovakia's Juraj Sagan, the brother of the decorated Peter, is one of the riders to have pulled away in the early stages of the men's road race, with the frontrunners opening up a lead of more than eight minutes.

There is still more than 190km to go - and a lot of climbing to come - but the riders are being applauded through the streets at the moment, with plenty of spectators taking their chance to see some live Olympics action.

Image source, Getty Images

As mentioned earlier, Tokyo is experiencing some intense heat and that is already having an impact on the Games.

A Russian archer fainted during Olympic qualifying. Svetlana Gomboeva, 23, collapsed while checking her scores. She regained consciousness and left on a stretcher.

With temperatures of around 33C in the archery dome on Friday, athletes had challenges with hydration and staying cool, while support staff huddled in shaded areas.

Earlier this week experts said Tokyo's heat and humidity could pose a significant threat to competitors.

Monday's rowing races have been switched to Sunday to avoid "unrowable" conditions.

Read more on how the weather is impacting the Olympics.

Image source, Getty Images

GB's Helen Glover, who qualified for the semi-finals of the women's pair along with Polly Swann: "There is definitely more to come. That probably wasn't reflective of where we have been at in training.

"First race of the Olympics, it's a good marker for us to step up from. I think we have qualified for the next round, we know the semi-finals are going to be tough, so I think we are just taking it quite pragmatically - the first race done."

China's Yang Qian celebrates winning the first gold medal of the Tokyo Olympics in the women's 10m rifle competition.

The first of how many for China?

Image source, Getty Images

Image source, Getty Images

Image source, Getty Images