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By Saj Chowdhury
BBC Sport in Doha
As she opened a lead over defending champion Nafissatou Thiam about the first day of the heptathlon at the World 28, katarina Johnson-Thompson made two personal bests.
The Briton has 4,138 points after four events with the Belgian second (4,042) and also Kendell Williams third party (3,855).
The 26-year-old acquired her 100m hurdles race at 13.09 minutes – shooting 0.21secs off her previous best.
Her high leap was 1.95cm until 13.86m in the shot – a 71cm improvement.
Johnson-Thompson then ran 23.08 in her 200m warmth to recover the lead heading into the final 3 areas on Thursday.
To end the day on top is actually important, Johnson-Thompson told BBC Sport. I have still got three events to reconcile but to end the day on top after a not amazing 200m, Im pleased to be at the top.
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The Liverpool athlete edge over Thiam is a small improvement on last seasons European Championships, where the guide has been 87 points, even though Thiam proceeded to win the name.
Following the shot put, British Sydney 2000 winner Denise Lewis told BBC Sport:We have seen her face glum for so many decades so to conquer it here is simply fantastic. Shes currently demonstrating that shes a rival. Shes ready.
Dame Jessica Ennis-Hill, Britains former world and Olympic heptathlon champion, said she was impressed with the beginning of Johnson-Thompson to the contest.
That is the way you wish to begin a heptathlon, stated the 33-year-old. She got to her running and halfway down the trail that you saw her get into her rhythm.
I nearly thought Thiam was going backwards, but Kat was just pulling away from her.
It was a mens hammer final for Briton Nick Miller. He came to the event ranked fourth on the planet, but the Carlisle-born 26-year-old only handled 75.31m since he finished 10th.
He later lodged an appeal against a filthy given for his second throw of the evening, which if successful could have propelled him.
However a jury upheld the decision to call a throw.
Elsewhere, Great Yarmouths Sophie McKinna celebrated wildly as she booked her spot in Thursdays shot put final with 18.61m – the sixth best attempt in qualifying and almost 40cm better than her previous best.
Im not speechless but I am speechless today, said the 25-year-old, that celebrated by running across the trail.
Because of thrower, you generally understand when you let go of this in case its a great throw. I didnt expect that.
To get into a final and perform to the best of my ability in a World Championships – it means the entire planet.
Laura Muir eased into the 1500m semi-finals, while fellow Scot Eilish McColgan was another member of the Great Britain team to impress as she qualified for Saturdays 5,000m final as fourth fastest with a time of 14 minutes 55.79 seconds – fewer than eight seconds shy of her personal best.
Team-mate Laura Weightman, trained BBC commentator Steve Cram and by former world champion, made it through and was fifth in her heat Jessica Judd missed outside.
Defending champion Hellen Obiri of Kenya has been the fastest qualifier.
In the mens 110m hurdles final, the defending winner of Jamaica Omar McLeod dropped as he seemed to challenge leader Grant Holloway over the last set of barriers.
The 21-year-old American remained on his feet to win in 13.10 minutes. Russian 2015 champion Sergey Shubenkov took European champion Pascal Martinot-Lagarde and silver won bronze.
World indoor 60m hurdles champion had previously failed to qualify for the closing.
The boys take a stroll on the wild side
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