MC Soffia, a 13 year-old Brazilian rapper, is recording a special track live at the Maracana stadium for BBC 100 Women.

The opening lines?

"The country of football, full of female players. They are not recognised but are real warriors."

She is joined by DJ Tammy.

And the song itself? Have a listen!

Brazilian women's football coach Helena Pacheco can take credit for discovering Marta - a superstar footballer seen as one of the best, if not the greatest ever, female player.

She is helping our 100 Women experts, and showed off a special football shirt.

Look closely...

It says (in Portuguese): "With affection, from a player that loves you a lot. Marta"

The 100 Women team working on the problem of sexism in sport is visiting Rio's iconic Maracana stadium.

Our experts are discussing their ideas with Helena Pacheco, the coach who discovered Brazilian player Marta, a superstar of the global women's game.

Image source, BC

Yesterday our #TeamPlay women visited a Rio school to watch a sport that is described as the only true mixed-gender ball game.

Korfball is played with two teams, each made up of four male and four female players. It has similarities to both netball and basketball, but also some unique rules of its own.

"I really like it because you can play with boys and girls," says Giovanni, an 11-year-old student at Instituto Geremario Dantas.

"It's a sport that allows everyone to play - boys, girls and people with different abilities."

Read Amelia Butterly's dispatch about Korfball.

Ratchadaphon Winhantamma, 21, is a professional Muay Thai boxer.

She is is known professionally as "Sawsing Sor Sopit" in Thailand and won gold at Turkmenistan's fifth Asian Indoor and Martial Arts Games.

Traditionally, female Thai boxers must enter the ring by crawling under the lowest rope, whilst men stride over the top rope.

This is because menstruation is seen as detrimental to the protective magic that blesses the auspicious headband, or mongkol, that fighters are given.

So women - even when they aren't on their period - can't pass over that top rope because they might negate the blessings. However, not all women follow this rule.

This belief is taken a step further in two of Thailand's most famous and prestigious boxing stadiums, Rajadamnern and Lumpinee, where there are no female fights.

Image source, Niamh Griffin

Despite these obstacles, Ratchadaphon, who is also a mother, says she will "continue to fight until her body says no".

Read more about her story, and female Muay Thai fighters.

After becoming a wife and mother, Kavita Devi was told not to pursue a sports career.

She is now the first Indian woman to compete internationally in World Wrestling Entertainment.

Rio de Janeiro's favelas are a battleground between heavily armed drug gangs and the police. The death toll is high, and residents fear being caught in the crossfire.

But people have grown used to carrying out their daily lives against a permanent background of violence.

And some young girls have found solace and an escape from their environment through football.

Image source, Gustavo Oliveira/WBR Photo

They play on a pitch known to be a safe space in Complexo de Penha, located on the Morro do Caracol hill.

The pitch was built by Street Child United, external, a UK-based charity that gives at-risk young people opportunities through sport.

To ensure it was a safe place where children can play without fear, the charity struck a deal - with local residents, the police, and even the gangs - to declare it "off-limits".

Image source, Gustavo Oliveira/WBR Photo

"It is an inexplicable passion, because playing football I feel in another world, I forget my problems, I laugh a lot, I have fun and I make many friendships," says 16-year-old Larissa (pictured below).

Read more here.

Image source, Gustavo Oliveira/WBR Photo

Cricket is the most popular sport in India but the women's version of the game doesn't generate as much interest as the men's and is frowned upon in many sections of the society.

After the brilliant performance of the Indian team at this year’s Women's Cricket World Cup - where they finished runners-up to England - many female players are coming forward and taking the game up professionally.

The BBC meets female cricketers in the northern state of Jammu and Kashmir.

Image source, EPA

In a list of the world's 100 highest-paid athletes, there are 99 men.

The only woman to feature on the Forbes list, external is tennis great Serena Williams, in position 51.

But while a massive gender pay gap has been standard in the sports world for decades, recent research suggest the divide has vastly narrowed in recent years.

Read more: Is the gender pay gap in sport really closing?

Ethiopia's Derartu Tulu pulled off a spectacular victory to win gold in the 10,000m final at the Barcelona Olympics in 1992.

Twenty-five years on, she reflects on making history.

If you missed the one-hour discussion about sexism in sport that was broadcast earlier live on the BBC World Service, don't fear.

You can listen to it here, or by clicking the sound icon at the top of the page.

Here are some of your responses to our earlier discussion.

Let us know your ideas on how we should combat sexism in sport by tweeting with the hashtag #100Women.

Adriana Behar says there needs to be a structural change in the way Brazil involves girls and women in sport.

What is one change each of our panellists would like to see?

• Rodrigo Pian, coach and director of PSG Academy: "I want to see a woman president of Fifa."
• Renata Mendonca, founder of Dibradoras ("dribbling girls") Facebook page: "That when people see girls playing football they don't say 'she plays like a boy' but instead say: 'She plays like a girl and she plays very well.'"
• Adriana Behar, former Olympic beach volleyball player: "New positions for girls and women in sport."

More from Isabela Fleury on efforts to get rules changed around what women can wear to play beach handball.

Isabela Fleury is a handball player who took the media by storm when her team refused to wear the standard beach handball outfits - the so-called sunkini, which is not much bigger than a bikini.

They eventually won the protest and now can wear looser fitting clothes.

"The female body is seen as an object instead of an athlete," she says.

"Men dictate the rules for girls in handball, it's ridiculous."

The panel want more women in power in the world of sports.

Image source, Gett