Gold medallist Jasmine Camacho-Quinn speaking on BBC One: "Waking up this morning, there was adrenaline just rushing. I was like, 'let's get it.' I was working on six hours of sleep - I didn't care, I had a goal. I definitely came here and accomplished that.

"It's amazing. The first gold medal in track and field for Puerto Rico and the second gold medal ever - I don't know how to explain it right now but it really does mean a lot.

"Everyone knows what happened in 2016, but I won't let that race determine my future. I just came here and I won a gold medal. It means a lot."

BBC One

On BBC One, you can watch live hockey quarter-final action between Australia and India.

Meanwhile, over on the Red Button, it's the canoe sprint quarter-finals.

It was a good morning for GB's Beth Dobbin.

Dobbin successfully navigated her 200m heat to join the likes of Jamaican duo Shelly-Ann Fraser-Pryce and Elaine Thompson-Herah in the semi-finals.

The Brit has been drawn in the second semi-final, alongside Thompson-Herah, which takes place later today at 11:32 BST.

Then, on the track, Jasmine Camacho-Quinn won Puerto Rico's first ever track and field gold by powering to victory in the women's 100m hurdles final in 12.37 seconds.

We've had two athletics gold medals decided so far today.

First, Greece's Miltiadis Tentoglou prevailed with his last jump of 8.41m.

That leap tied him with Juan Miguel Echevarria, but Tentoglou took gold by virtue of his second-best jump on the day being longer than that of his Cuban rival.

Here's how a dramatic final round concluded.

Gurjit Kaur has scored the only goal of the opening half of the second women's hockey quarter-final.

The Indian scored midway through the second quarter.

Argentina are already into the last four after beating Germany 3-0.

Defending champions Team GB face Spain, who they beat 3-1 at this stage in 2016, at 13:00 BST, after New Zealand take on the Netherlands (10:30)

One through, one out. Mixed emotions for British pair Deborah Kerr and Emily Lewis.

Kerr, a 23-year-old from Motherwell, came through strongly in the final 50m to win the quarter-final in 42.742 seconds and book her spot in the semi-finals.

But there was agony for Lewis. The 28-year-old from Worcester finished third and missed out by 0.005 seconds. Canada's Michelle Russell edged in front at the death.

Kerr, who will compete in the semi-finals tomorrow, consoled her team-mate afterwards.

There are two medal races morning and British crews have chances to win medals in both.

First up at 06:33 BST is the Women’s 49er FX medal race.

Charlotte Dobson and Saskia Tidey, the 2020 world silver medallists, won the opening two races but are fifth going into today's race and re eight points off bronze.

Dobson is set to marry GB team-mate and fellow sailor Dylan Fletcher straight after the Games.

Fletcher and Stuart Bithell are second going into their 49er finale on Monday, four points adrift of defending champions and two-time Americas Cup winners Peter Burling and Blair Tuke of New Zealand.

They are also level on points with Spain’s Diego Botin and Iago Lopez and are a healthy 10 points clear of bronze.

Could Fletcher make it a medal double with fiancee Dobson?

Image source, EPA

Earlier, GB pair Laura Muir and Katie Snowden secured their spots in the women's 1500m semi-finals.

Here's how they did it.

BBC Red Button

Over on the red button, the canoe sprint action continues.

The C2 1,000m event really is something else. Do check it out.

Image source, Getty Images

Alex Capstick
BBC Sport

The International Olympic Committee is investigating Sunday's podium protest by the American shot putter Raven Saunders.

The silver medalist, who is black and gay, raised her arms and formed a cross with her wrists. It’s been reported this is a sign of solidarity with oppressed people.

Great Britain's Deborah Kerr takes the win in her kayak Single 200m quarter final to qualify for the semi-finals.

Unfortunately, compatriot Emily Lewis, competing in the same quarter, has just missed out by a whisker after racing out of the blocks.

The semi-finals take place tomorrow at 01:30 BST.

Image source, Getty Images

This really was a bit of a nightmare for Jamaica's Shericka Jackson.

Having taken bronze in the 100m in Tokyo, Jackson eased off far too soon in her 200m heat - a decision that ultimately cost her a place in the semi-finals.

Jeanette Kwakye
Former British 100m champion on BBC TV

When Camacho-Quinn crossed the line, she was saying: 'I did it! I won!'

You do wonder about the amount of pressure that sits on the shoulders of athletes that go into these races as favourites, knowing they're about to make history.

She's a fantastic woman to watch go over those hurdles.

Image source, Getty Images

Alex Capstick
BBC Sport

Belarusian sprinter Krystsina Tsimanouskaya, who criticised her coaches and then voiced fears for her safety on Sunday after refusing an order to fly home, stayed in an airport hotel overnight after she had asked for protection.

The International Olympic Committee (IOC) say she’s being looked after by the Japanese authorities with the UN refugee agency, UNHCR, also involved.

The IOC is talking to her this morning to find out what she wants and to support her and say she told them she feels safe and secure.

The Belarus National Olympic Committee have been asked for a full written report.

Leading officials of the Belarus NOC are banned from the Games, a decision taken late last year. They include the president of the NOC, Viktor Lukashenko, the son of the country’s president.

The decision was taken following allegations the NOC was failing to protect athletes who protested against the government.

This event - a head-to-head race along an open stretch of water - has been a one-woman show for the past decade.

New Zealand's Lisa Carrington is going for an Olympic three-peat and has not been beaten over 200m since 2011. A whole decade of dominance! Her supremacy was recently compared by Time magazine to that of Simone Biles.

Unsurprisingly the 31-year-old eased into tomorrow's semi-finals in the heats earlier today.

Now the big question is whether any of two Britons can join her there.

Deborah Kerr and Emily Lewis did not qualify for the semi-finals, but third and fourth places respectively have put them in the quarter-finals.

Both are in the third quarter-final at 04:15 BST. Top two through, the rest will be booking flights home.

Image source, Getty Images

Colin Jackson
Two-time world 110m hurdles champion on BBC TV

Very good, strong finish there from Camacho-Quinn.

Disappointing from Jamaica's Britany Anderson, she made a crucial mistake in the middle of the race, she hit one of the barriers and that was the end of her race.

That 12:37 from Camacho-Quinn is a strong performance. She's developed so well.

Jasmine Camacho-Quinn takes a commanding victory in 12.37 seconds.

It's silver for the USA's Keni Harrison (12.52) and bronze for Jamaican Megan Tapper (12.55).