Jamie Wilks from Loughborough University Sport Ecology department speaking to BBC Radio 5 Live Breakfast about the poor water quality levels of the River Seine: "The level of E.coli has gone above the level of safe bathing for water that is set by World Aquatics and World Triathlon. It's gone about the thousand level of 100m of water. This is because of the intense rainfall that Paris suffered over the weekend during the opening ceremony, so this rainfall mixes with the waste water from houses in the street and the storm water run of into the sewer system then enters the River Seine."

On whether the water can be clear within 24 hours: "The water quality will change really quickly depending on the flow of the river and because it has been raining quite a lot over May and June, the flow of the river is quite high for the summer so you're looking within the next 24 hours that the water quality will improve. They've just got to hope there is no more rain within the next 24 hours."

On whether the athletes are happy with the risk: "The athletes are not happy about it. We spoke to Toby Robinson and Hector Pardoe who will be competing for Great Britain in the Marathon Swimming events and they're not happy but their attitude is that there are Olympic medals on the line and they are going to do whatever it takes to win."

The postponement of the triathlon means there are some changes to our schedule. Here is what we are planning to show today on BBC One, BBC Two and iPlayer (schedule subject to change).

(all times BST)

• 0810-0900 Men's beach volleyball, starting with Poland v Australia
• 0855 Mixed team air pistol medal matches
• 9.30 Judo - Lucy Henshall v Katarina Hecker of Australia in the women's 63kg class
• 9.50 women and men's double sculls semi-finals in the Rowing
• 10.35 Swimming heats
• 11.10 Windsurfing - including GB's Emma Wilson
• 11.35 Swimming men’s 100m freestyle heats – featuring Jacob Whittle and Matt Richards
• 11.45 Swimming women’s 100m freestyle heats – including Anna Hopkin
• 11.50 Men’s 200m breaststroke heats
• 12:08 Men's 4 x 200m Freestyle Heats
• 12.15 Men’s Hockey Ireland v India
• 13.05 Men’s Hockey GB v Netherlands
• 13.50 Table Tennis Mixed Doubles Final
• 14.30 Rugby Sevens Women’s Semi-final 1
• 14.55 Rugby Sevens Women’s Semi-final 2

BBC One

Coverage has now started on BBC One.

If you are wondering where the men's triathlon coverage is, the news came this morning that it has been postponed until tomorrow because of the poor water quality in the River Seine.

The BBC crew have been reacting to that news, and you can read more about it from BBC Sport journalist Harry Poole in Paris.

The first live sport coming up will be the men's beach volleyball shortly, between Australia and Poland.

Katie Stafford
BBC Sport journalist

The medals kept coming in the evening as Great Britain's Adam Burgess claimed Olympic silver in the men's canoe singles final at the Vaires-Sur-Marne Nautical Stadium.

The 32-year-old qualified fourth fastest with a clean semi-final performance and produced another impressive run in the final to win his first Olympic medal.

"This is a moment I’ve dreamed of all my life," he told BBC Sport.

"There’s been so many times in races where I’ve not taken my opportunity and where a mistake put me off the podium, or turned into more mistakes. To see me go into first with just a few boats to go was absolutely magic."

Burgess clocked a time of 96.84 seconds, only eclipsed by France’s Nicolas Gestin who crossed the line 5.48 seconds faster to win gold.

Read the full report here

Harry Poole
BBC Sport in Paris

Laura Collett then backed it up with an individual bronze.

Collett, 34, spent six days in a coma after sustaining a punctured lung, spine, shoulder and rib fractures, and losing much of her vision in one eye in her fall 11 years ago.

She has described London 52 as "the horse of a lifetime", and the pairing completed a memorable medal double in Paris - three years after placing ninth together in the individual competition.

“I never thought this day would come,” Collett told BBC Sport.

“Moments like this make it worth it. You can never dream too big.”

Harry Poole
BBC Sport in Paris

There was another golden moment for Team GB as they retained their Olympic team eventing title.

Tokyo 2020 champions Laura Collett and Tom McEwen, joined by world number one Ros Canter, sealed victory in Monday's final showjumping stage at Chateau de Versailles.

Team GB ended the three-day team competition with 91.30 penalties to finish a commanding 12.3 clear of host nation France, while Japan took bronze.

Read the full report here

It was such a dramatic ending, with Pidcock and Koretzky tussling for first place on several occasions.

He had to push so, so hard to make up that time on the leading pack and was visibly exhausted in his post-race interview, but understandably thrilled at the same time!

Katie Falkingham
BBC Sport in Paris

Tom Pidcock provided afternoon drama on Monday to retain his mountain bike title in astonishing fashion.

In one of the most memorable Olympic comebacks, Pidcock defied a puncture on the fourth lap to make up 40 seconds of ground and take a last-gasp victory.

The world champion, who turns 25 on Tuesday, edged out Victor Koretzky with remarkable skill.

His puncture came while he was leading the race, and looked to have ended Pidcock's chances, but he again demonstrated his generational talent on the mountain bike to move his way back up the standings.

Pidcock ruthlessly found a different line through the trees with his superb bike-handling skills as he edged ahead and then came off best after brief contact between the pair.

Read the full report here

Image source, Getty Images

Here are the GB athletes in acton this afternoon (all times BST):

• Great Britain face China in the women's rugby sevens 5-8th play-offs (13:30).
• In BMX freestyle, Charlotte Worthington begins the defence of her women's park title won in Tokyo (from 12:25). World champion Kieran Reilly competes in men's park qualification (from 14:11).
• Joe Clarke, who won canoe slalom gold in Rio eight years ago but was left out of the GB team for Tokyo in 2021, is back for Paris and begins his K1 event with the heats (from 15:00). Mallory Franklin, the women’s C1 Tokyo silver medallist and world champion, starts her heats at 14:00.
• Andy Murray, in his final tennis tournament, continues in the men's doubles with Dan Evans against Belgium's Sander Gille and Joran Vliegen (about 15:30).
• Great Britain will go for gold in the women's artistic gymnastics final, though USA - including a certain SImone Biles - will start as favourites to top the podium (from 17:15).
• Kirsty Gilmour continues her women's badminton campaign against He Bing Jiao of China (18:30).

Image source, Getty Images

Despite the postponement of the triathlon there are plenty of other Team GB athletes in action this morning (all times BST):

• In shooting, Lucy Hall competes in the women's trap qualification (from 08:00). Tokyo bronze medallist Matthew Coward-Holley and 2022 world silver medallist Nathan Hales are in the men's competition (from 08:30).
• Lucy Renshall faces Katharina Haecker in the women's -63kg judo (from 09:00).
• Mathilda Hodgkins Byrne and Rebecca Wilde compete in the semi-finals of the women's double sculls (10:00).
• In the pool, Matt Richards, fresh from Monday night's silver, competes in the 100m freestyle heats, with Jacob Whittle also in action (from 10:17). Anna Hopkin races in the women's 100m freestyle heats (11:54). Defending champions Great Britain race in the men’s 4x200m freestyle heats (12:20).
• GB have an accomplished team in the dressage (10:00) despite the absence of three-time gold medallist Charlotte Dujardin.
• Jack Draper, Katie Boulter and Heather Watson are in tennis singles action (from 11:00). Watson also begins her mixed doubles campaign with Joe Salisbury.
• There's a busy day of sailing, with Emma Wilson in the women’s iQFOiL windsurfing (11:13), Sam Sills in the men's competition (13:17), Freya Black and Saskia Tidey in the Women’s 49erFX skiff (14:45), and James Peters and Fynn Sterritt in the men's competition (15:35).

BBC iPlayer

Our coverage on BBC iPlayer and the Red Button has now started. You can also watch from the top of this page.

Up first is the badminton group stages that are going on throughout the day. We've got men’s singles and doubles and the women’s singles and doubles. Kirsty Gilmour is the only Team GB interest but she isn't playing until 18:30 BST tonight.

At 8:30 BST the coverage will switch to the rowing. Team GB compete in the women’s double sculls at 9:50 BST.

Jonathan Jurejko
BBC Sport at Roland Garros

Monday's tennis saw a reunion of two of the world's greatest.

Novak Djokovic outclassed his long-time rival Rafael Nadal to win their Olympic second-round match and continue his bid to land an elusive gold medal.

Serbia's Djokovic, 37, looked on a different level to Nadal for most of a one-sided contest which he won 6-1 6-4 on the Roland Garros clay.

Djokovic led 4-0 in the second set to quell the partisan support for the Spaniard, before 38-year-old Nadal fought back to wipe out the double break.

But Djokovic, like we have seen him do so many times, stepped on the gas again to break for 5-4 and serve out victory.

Read the full report here

Matthew Henry
BBC Sport in Paris

Image source, Getty Images

Also in aquatics, Adam Peaty tested positive for Covid-19 on Monday, a day after winning silver for Team GB in the 100m breaststroke at the Paris Olympics.

Peaty missed out on a third consecutive gold medal by 0.02 seconds on Sunday and afterwards said he had been slightly unwell with “a little bit on my throat”.

A Team GB statement said the 29-year-old’s condition worsened overnight and he has now tested positive for coronavirus.

Peaty was expected be part of the British relay teams later in the Olympics, with a possible return to action as soon as Friday. Team GB said he is “hopeful to be back in competition”.

Read the full story here

Daley said that his eldest son Robbie was his inspiration for giving the Olympics another go, after the six-year-old said he wanted to see his dad compete at the Games.

His family were all in attendance on Monday, with his husband and mum visibly emotional as their medal was confirmed. His youngest son Phoenix even took some of the limelight in Daley's interview - you can see the very sweet moment below.

Matthew Henry
BBC Sport in Paris

Yesterday's medal haul was started by Tom Daley as the five-time Olympian won his fifth medal with a superb silver alongside Noah Williams in the men's synchronised 10m platform in Paris.

It was an emotional occasion as Daley, 30, who effectively retired from the sport after winning gold in the event in Tokyo, looked calm as he returned to the biggest stage and performed exceptionally under pressure with Williams, 24.

The pair applied pressure to China's Lian Junjie and Yang Hao - who were ultimately in a class of their own for gold after three world titles in a row - and were comfortable silver medallists after six fine dives.

Read the full report here

Here is what we planning on showing on our additional channel on BBC iPlayer and the red button (all listings are subject to change)

(all times BST)

07:30: Men's and women's badminton singles

08:00: Beach volleyball

08:30: Rowing heats

10:00: Air pistol mixed team final

10:50: 3x3 basketball - Spain v Greece

11:35: Boxing

11:45: Men's hockey - GB v Netherlands

14:00: Shooting men's trap final, followed by catch-up on canoe slalom, tennis and badminton

15:30: Men's tennis doubles

18:00: Women's rugby sevens bronze and gold matches

21:35: 3x3 basketball - Serbia v USA

Here is what we are planning on showing today on BBC One, BBC Two and iPlayer (all listings are subject to change).

(all times BST)

09:15: Men's trap shooting qualification

09:30: Women's judo -63kg

10:10: Rowing women's double sculls semi-final

11:10: Windsurfing

11:35: Swimming men's 100m freestyle heats

11:45: Swimming women's 100m freestyle heats

11:50: Swimming men's 200m breaststroke heats, followed by 4x200m freestyle heats

13:05: Men's hockey - GB v Netherlands

13:50: Table tennis mixed doubles final

14:30: Rugby sevens women's semi-finals

16:00: Shooting men's trap final

16:30: Women's 3x3 basketball - USA v Germany

17:00: Gymnastics women's team final

19:30: Swimming

The triathlon postponement leaves quite a significant gap in today's schedule, but we'll let you know what's coming up throughout the morning once those arrangements have been made.

Great Britain's Alex Yee is one of the favourites for gold in the men's triathlon, while team-mate Beth Potter is the reigning women's world champion.

Tests are being carried out daily on the water quality in the River Seine, which is also due to host the triathlon mixed relay on 5 August, the Olympic marathon swimming on 8 and 9 August, and the Para-triathlon event at the Paralympics, which start on 28 August.

This is a big concern for the Games organisers. Yesterday, they were confident that the event would go ahead as planned. Another issue is that there are thunderstorms due tonight (Tuesday) which could make things worse.

Swimming in the River Seine was banned for a century because of the water quality.

Tests in June still showed levels of E.coli above the upper limits imposed by sports federations.

Earlier this month, tests showed the river was clean enough for swimming but heavy rain in Paris on Friday and Saturday has led to the quality diminishing.

Thunderstorms are forecast for Tuesday evening after a day of hot weather.

Tests are carried out daily, with all readings over the past few days showing the water quality was below an acceptable standard.

Following a meeting on water quality held on 30 July at 3.30am attended by Paris 2024, representatives of World Triathlon and their Technical and Medical Delegates, the International Olympic Committee, Météo France, the City of Paris and the Prefecture of the Île-de-France Region involved in carrying out water quality tests, Paris 2024 and World Triathlon has decided to postpone the men’s triathlon event which was due to be held on 30 July at 8am.

Considering the latest weather information, it has been decided to schedule the men’s triathlon event on 31 July at 10h45. The women’s triathlon is due to take place the same day at 8am. Both triathlons are subject to the forthcoming water tests complying with the established World Triathlon thresholds for swimming. A contingency day remains in place for 2 August.

Paris 2024 and World Triathlon reiterate that their priority is the health of the athletes. The tests carried out in the Seine today revealed water quality levels that did not provide sufficient guarantees to allow the event to be held.

Unfortunately, meteorological events beyond our control, such as the rain which fell over Paris on 26 and 27 July, can alter water quality and compel us to reschedule the event for health reasons. Despite the improvement of water quality levels over the last hours, the readings at some points of the swim course are still above the acceptable limits.