Olympics catch-up: Silver medals, green pools and all the important things you missed overnight from day four at Rio

Team GB won two silver medals overnight, on a day that proved to be quite the emotional rollercoaster.

Here's all the action from across Rio that you might have missed while you were sleeping - and should probably catch up on immediately.

Siobhan O'Connor swam to silver in the 200 metres individual medley.

Setting a British record of 2 minutes 06.88 seconds, O'Connor closed down on Hungary's Katinka Hosszu in the final length to win second place.

The 20-year-old from Bath said: "I was pretty nervous in the call room and knew I had to try to stick to how I swim the race best.

"When I looked around and saw the time I was over the moon because I didn't think I had that time in me. I'm really pleased to push her as hard as I could."

Siobhan O'Connor with her silver medal
Siobhan O'Connor with her silver medal (Mike Egerton/PA)

O'Connor's achievement is all the more impressive considering she was diagnosed with the debilitating colon condition ulcerative colitis after London 2012, where she made her Olympic debut aged only 16.

More good news came from the men's 4x200m freestyle relay, with the team winning silver.

Stephen Milne dives into the pool
Stephen Milne dives into the pool (Mike Egerton/PA)

Although they were down in the first leg, the team of James Guy, Stephen Milne, Dan Wallace and Duncan Scott managed to pull back and Guy overtook the Japanese team in the final leg to claim silver.

There was a degree of redemption for Guy, who went into the individual 200m as world champion but agonisingly missed out on a medal in fourth.

First place went to team USA, with Michael Phelps winning his 21st Olympic gold medal.

Andy Murray beats Argentinian Juan Monaco.

Andy Murray
Andy Murray celebrates his win (Charles Krupa/AP)

This gets the Team GB flag bearer through the third round of the tennis. He won 6-2 6-1, in a bid to defend his gold medal.

Tennis has certainly been full of surprises this year, with Murray the only defending champion left out of the men's and women's singles and doubles.

The Team GB women's gymnastics team finished a somewhat disappointing fifth.

However, all those at home were very proud of their performance and were quick to show Ruby Harold, sisters Elissa and Rebecca Downie, Amy Tinkler and Claudia Fragapane love and support.

The team from the USA dominated the gymnastics, led by an impressive Simone Biles.

Fragapane, the four-time Commonwealth champion, described Biles as "incredible", while Rebecca Downie said she was "on another level".

Tonia Couch and Lois Toulson finished fifth in the women's synchronised 10 metres platform final.

Couch and Toulson dive into the oddly green pool
Couch and Toulson dive into the oddly green pool (Matt Dunham/AP)

However, during this competition people were slightly distracted by the bizarrely green colour of the pool.

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