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By Saj Chowdhury
BBC Sport in Doha
Katarina Johnson-Thompson produced two personal bests over defending champion Nafissatou Thiam on the first day of the heptathlon at the World Championships, as she started a 96-point lead.
The Briton has 4,138 points after four events with the Belgian second (4,042) along with Kendell Williams third (3,855).
The 26-year-old acquired her 100m hurdles race in 13.09 minutes — shooting 0.21secs off her previous best.
Her high jump was 1.95cm prior to 13.86m at the shot put — a 71cm progress.
Johnson-Thompson then ran 23.08 in her 200m heat to recover the lead heading into the last few areas on Thursday.
To finish the day on top is really important, Johnson-Thompson told BBC Sport. I have still got three events to reconcile but to finish the day in addition to a not wonderful 200m, Im delighted to be at the top.
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The Liverpool athletes day-one advantage over Thiam is a slight improvement on last seasons European Championships, even though Thiam proceeded to win the name by 57 points where the lead was 87 points.
Observing the shot put, British Sydney 2000 winner Denise Lewis told BBC Sport:Weve seen her face glum for so many ages to conquer it here is just fantastic. She is demonstrating that shes a competitor. She is ready.
Dame Jessica Ennis-Hill, Britains former world and Olympic heptathlon champion, said that she was impressed by Johnson-Thompsons start to the competition.
Thats the way you want to begin a heptathlon, stated the 33-year-old. She got into her running and halfway down the track 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 disappointing mens hammer 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 lodged an appeal against a foul given for his second throw of the evening, which if successful would have propelled him.
However the decision to call a foul throw was upheld by a jury .
Elsewhere, Great Yarmouths Sophie McKinna renowned tremendously as she booked her place in Thursdays shot put final with 18.61m — that the sixth greatest effort in qualifying and almost 40cm better than her previous best.
Im not speechless but I am speechless now, said the 25-year-old, that celebrated by running round the trail.
Because of thrower, you typically know when you let go of it in case its a good throw. I didnt expect that.
For a final and play to the best of my ability in a World Championships — it means the whole world.
Laura Muir eased into the 1500m semi-finals, although fellow Scot Eilish McColgan was just another member of the Great Britain team to impress as shes qualified for Saturdays 5,000m final as fourth fastest with a time of 14 minutes 55.79 seconds — fewer than eight minutes shy of her personal best.
Team-mate Laura Weightman, trained BBC commentator Steve Cram and by former world champion, was fifth in her heat and made it through, however Jessica Judd missed outside.
Defending champion Hellen Obiri of Kenya was the fastest qualifier.
Because he seemed to challenge leader Grant Holloway within the last set of obstacles, From the mens 110m hurdles final, the defending winner of Jamaica Omar McLeod fell.
The 21-year-old American stayed on his toes to win in 13.10 seconds. Russian 2015 winner Sergey Shubenkov, competing within an Authorised Neutral Athlete, took French champion Pascal Martinot-Lagarde and silver won bronze.
British world indoor 60m hurdles winner had previously failed to qualify for the final.
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