Neeraj Chopra and coach Klaus Bartonietz: The timeline and history Olympic gold-winning partnership

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Neeraj Chopra’s reported split with long-term coach Dr Klaus Bartonietz has left the Indian athletics circuit in a shock. As per media reports, the two-time Olympic medalist will soon start training under a new coach as he prepares for the 2026 Asian Games.

Whatever the future holds, India’s golden boy Neeraj and Dr Bartonietz have forged one of the most fruitful coach-athlete partnerships in Indian sporting history. Together, the duo shattered records after records en route to historic gold and silver medals in the Olympic Games.

Neeraj Chopra and Klaus Bartonietz: When did their partnership begin?

German biomechanics expert Dr Klaus Bartonietz joined the coaching team of Neeraj Chopra in 2018, when the rising athletics star was recovering from an elbow injury. At that point, Neeraj trained under the former world record holder Uwe Hohn.

However, Hohn and Neeraj had several points of friction. Firstly, Hohn was a power thrower, which did not suit the technical nature of Neeraj’s game. Secondly, the German athlete allegedly did not want his mentee to opt for surgery for his elbow, which would have delayed his recovery time before the Tokyo Olympics.

As a result, the Sports Authority of India (SAI) replaced Hohn with Dr Bartonietz as Neeraj’s coach in 2019. Bartonietz's expertise in biomechanics — a field that emphasises technique, efficiency, and injury prevention — quickly made him a perfect match for Neeraj Chopra going forward.

Neeraj Chopra and Klaus Bartonietz: Why did the duo get along together?

While Uwe Hohn’s training was power-centric, Bartonietz believed in perfecting the technical aspects of javelin throwing. Neeraj, who is naturally inclined towards a more technical style, found Klaus’s approach both refreshing and suited to his strengths. The emphasis was not just on how far he could throw, but on how efficiently he could do it with minimal strain on his body — particularly important given his history of injury.

Dr Bartonietz was also crucial in Neeraj’s recovery from an elbow injury that he suffered on his throwing arm in 2019. After being out of action for almost a year, his coach worked tirelessly to make sure that the young athlete was physically and mentally ready to return to the track.

Neeraj Chopra and Klaus Bartonietz: Medals won during their collaboration

As a result of their complementary styles, Neeraj Chopra and Dr Klaus Bartonietz enjoyed one of the most successful coaching partnerships in terms of medals. The German’s guidance enabled the Haryana-born athlete to hone his skills to the point of becoming a consistent 87 -metre-plus thrower in every competition. So, the medals began to flow in.

After recovering from surgery, Neeraj made his comeback at the Athletics Central North West League Meeting in South Africa in January 2020, winning with a throw of 87.86 metres. This throw earned him a spot at the Tokyo Olympics.

After a period of disrupted training sessions due to the COVID-19 pandemic, Neeraj Chopra roared back with a gold medal at the Meeting Cidade de Lisboa in Portugal in June 2021. This was followed by victories at the Karlstad Meet in Sweden.

However, the crowning achievement of the Neeraj-Klaus partnership came at the delayed Tokyo Olympics in August 2021. Neeraj threw 87.58 metres to win the gold medal, becoming the first Indian athlete to claim an Olympic gold in track and field.

Neeraj’s gold medal win, especially after a year-long period of rehabilitation from a series of elbow injuries, was credited to the scientific training approach taken by Dr Klaus Bartonietz.

After the Tokyo gold medal win, the duo continued their dominance, with Neeraj winning gold at the 2023 World Athletics Championships with a throw of 88.17 metres, and at the Asian Games in September 2023, where he registered a throw of 88.88 metres.

However, due to a niggling injury, Neeraj failed to defend his Commonwealth Games gold medal in 2022. The javelin thrower then made a comeback in August 2023, becoming the first Indian athlete to win a gold medal at the World Athletics Championships, with a throw of 88.17 metres.

In September 2023, Chopra continued his winning streak by successfully defending his gold medal at the Asian Games in Hangzhou with an impressive throw of 88.88 metres.

More history was to be scripted by Neeraj and Dr Bartonietz, as the Indian athlete recorded a season-best throw of 89.45 metres at the Paris Olympics 2024. However, he narrowly missed out on gold, finishing second behind Pakistan's Arshad Nadeem, who set a new Olympic record with a throw of 92.97 metres. Despite this, Neeraj made history by becoming the first Indian to win both gold and silver medals in consecutive Olympic Games.

Neeraj Chopra and Klaus Bartonietz: Why are the pair splitting?

Despite the immense success they have enjoyed together, Neeraj Chopra and Dr Klaus Bartonietz will reportedly no longer work together in the upcoming tournaments. However, neither the athlete nor the coach have confirmed the news or revealed the reason behind the split.

Meanwhile, the Athletics Federation of India (AFI) President Dr Adille Sumariwalla said that the decision was taken considering the German coach’s age and family commitments. He further said that Dr Bartonietz, aged 75, himself backed the decision to end his association with Neeraj Chopra.

One more reason that can be behind the split is the fact that Neeraj Chopra famously failed to clear the 90-metre mark so far in his career. The failure has become a sort of Achilles heel for the Indian star, with opponents Arshad Nadeem, Anderson Peters, and Jakub Vadljech among those who have broken the 90m barrier in their careers.

It is expected that a change in the coaching style will be made to improve Neeraj’s chance of getting over the 90m mark that he has so far failed in his otherwise illustrious career.