Jessica Ennis-Hill proved she is ready to defend her World Championship heptathlon title next month while Katarina Johnson-Thompson revealed the full extent of her injury woes.

Ahead of the IAAF World Championships in Beijing next week, Jessica Ennis-Hill and Katarina Johnson-Thompson have been busily preparing at a training camp in Fukuoka, Japan.

The lead-up to this summer’s World Championships has been dominated by doping revelations, but starting on Saturday the athletes have a chance to lift their sport from the mire.

Jessica Ennis-Hill and Katarina Johnson-Thompson will clash for the first time since 2012 when they compete in the World Championships in Beijing. Ennis-Hill aims to add at least 250 points to her best.

British Athletics would not be making public any medal targets for the World Championships in Beijing. Here Sportsmail looks at where they are likely to come from.

MARTHA KELNER IN BEIJING: Jessica Ennis-Hill leads the heptathlon at the World Championships after the opening two events inside the Bird’s Nest stadium. 

MARTHA KELNER IN BEIJING: Jessica Ennis-Hill and Katarina Johnson-Thompson go head-to-head on Sunday in a battle to be crowned heptathlon World Champion.

MARTHA KELNER IN BEIJING: Jessica Ennis-Hill being crowned world champion 13 months since giving birth and after an almighty battle back to fitness seems a mere formality.

Britain's Katarina Johnson-Thompson's World Championship medal hopes have gone up in smoke after she failed to record a distance in the long jump as Jessica Ennis-Hill stayed in front.

Greg Rutherford demanded critics lay off Katarina Johnson-Thompson after her long jump collapse cost her a heptathlon medal at the World Championships in Beijing.

Katarina Johnson-Thompson began her quest for redemption after her heptathlon 'walk of shame' by comfortably qualifying for the long jump final at the athletics World Championship.

MARTHA KELNER: Shara Proctor is expecting a carnival reception when she returns to Anguilla, the tiny Caribbean island where she grew up having to dodge cricket balls to pursue long jump.

With just 198 days to go until the Rio Oympics, Katarina Johnson-Thompson has gold in her sights after being revealed as the face of paint company Dulux's Colour of the Year for 2016.

Katarina Johnson-Thompson possesses so much talent that she finished the first day of the heptathlon in Gotzis in second, despite finishing dead last after an inexplicably poor shot put.

Johnson-Thompson believes she has the ability to beat Ennis-Hill and wants to fulfil her burgeoning potential with a gold medal in Rio next month.

The Muller Anniversary Games takes place at London's Olympic Stadium this weekend as some of the world's best athletes prepare for the start of the 2016 Olympics in Rio de Janeiro next month.

Jessica Ennis-Hill is favourite to retain the title she won at London 2012 but she is expected to face stiff competition from compatriot Katarina Johnson-Thompson at the Rio Olympics.

In June 2012 Katarina Johnson-Thompson scored a huge lifetime best in the heptathlon at a low-key meeting in Kladno in the Czech Republic to unexpectedly qualify for the London Olympics.

The first full day of Olympic action takes place on August 6. Sportsmail has put together a guide to the seven to follow throughout the Olympic Games and the Paralympic Games in Brazil.

Team GB and Team USA already have a slew of medals under their belt, but as these adorable photographs show, each and every one of our Olympians had to start somewhere.

Sir Bradley Wiggins has become the most decorated British Olympian in history after winning his eighth individual medal, as part of the men's team pursuit squad.

Britain's golden girls Jessica Ennis-Hill (left) and Katarina Johnson-Thompson (right) yesterday began their battle for the women’s heptathlon title in Rio de Janeiro.

Katarina Johnson-Thompson’s rivalry with fellow British poster girl Jessica Ennis-Hill has been one of the big stories of the Games so far, but little has been heard about her father.

Katarina Johnson-Thompson has not improved her heptathlon personal best since 2014. Senior figures in British Athletics would like her to part company with long-time coach Mike Holmes and leave Liverpool.

DALEY THOMPSON: The achievement of Jessica Ennis-Hill in winning back-to-back medals in the Olympic heptathlon places her alongside the best British athletes in history.

It's HOT OR NOT time once again, as IAN LADYMAN runs the rule over the good and bad from the world of sport this week, including Glenn Hoddle, Gary Neville and Mark Cavendish.

Katarina Johnson-Thompson has been ruled out of the Indoor Grand Prix but is expected to be fit for the European Indoor Championships after suffering a minor hamstring strain.

The Scottish runner has been in fine form and she leads a team packed with medal prospects. Performance director Neil Black said he is 'pleased with the blend of the team' for the championships.

Katarina Johnson-Thompson admits to a struggle learning French but says a new life in Montpellier and mentoring from Jessica Ennis-Hill could translate into gold-winning performances.

She leads Olympic champion Nafissatou Thiam and Carolin Schafer, who sit three and six points back respectively going into the long jump, javelin and 800m.

RIATH AL-SAMARRAI: There was fresh hope as Johnson-Thompson hit new heights in Gotzis but saw just how tough it will be to win a World Championship medal in August.

With the World Championships in London just around the corner, the excitement levels are slowly starting to build. WILL KELLEHER takes a look at the athletes that fans should watch out for.

Katarina Johnson-Thompson's World Championship medal hopes have been all but dashed in the opening session of the heptathlon after an awful high jump performance.

Katarina Johnson-Thompson registered a season-best throw of 41.72 metres but it was only good enough for 20th place as her heptathlon hopes took a hit on Sunday afternoon.

RIATH AL-SAMARRAI: An evening that started with Jessica Ennis-Hill collecting a back-dated gold medal concluded with the sense the current generation are short of where they need to be.

Pole vaulter Holly Bradshaw declared herself 'heartbroken' after falling short in the final. Bradshaw needed to clear the bar at 4.75m on her final jump to stand a chance of a podium finish.

RIATH AL-SAMARRAI AT THE LONDON STADIUM: Johnson-Thompson, there was a degree of redemption, considering it was this discipline that wrecked her chances in the heptathlon.

UK Athletics chief executive Niels de Vos has defended Britain's performance at the World Championship by claiming an athletics medal is the hardest prize to win in sport.

The 25-year-old is favourite for the pentathlon at the World Indoor Championships, which were getting under way on Thursday but has played down her chances of winning.

In the space of a pentathlon on Friday, Johnson-Thompson ran, jumped and threw her way out of the realm of perennial underachiever and into one reserved for world champions.

HOT OR NOT: Patrick Bamford rediscovers form at Middlesbrough

Here, Sportsmail's Riath Al-Samarrai athletics correspondent brings you eight athletes to watch throughout the 2018 Commonwealth Games in Australia's Gold Coast.

Katarina Johnson-Thompson insists she has no plans to switch away from heptathlon to jumping events - but has indicated she is open to contesting a decathlon before the close of her career.

EXCLUSIVE INTERVIEW BY RIATH AL-SAMARRAI: Two gold medals tell a story of potential being fulfilled, but there has also been a painful loss. Her father, Ricky Thompson, died last November.

Katarina Johnson-Thompson sits top of the leaderboard after the opening morning of the heptathlon at the European Championships.

Sometimes the opposition is just too good. For that reason alone, Katarina Johnson-Thompson will reflect on the silver linings of her trip to Berlin instead of celebrating a golden hat-trick.

For Katarina Johnson-Thompson, there was a hugely impressive silver medal after eventually losing her fascinating heptathlon tussle with the great Belgian, Nafi Thiam.

On the basis of her impressive performances in winning a European heptathlon silver medal in Berlin this week, the odds are finally shortening on her one day finding a way past Nafi Thiam.

Athletic stars Katarina Johnson-Thompson and Dina Asher-Smith made the most of their post-season break by heading down the catwalk at Paris Fashion Week.

It says something about her complex psychology that Katarina Johnson-Thompson arrived to a headliner's billing in an Austrian mountain town on Friday and found it all rather strange.