IAAF World Championships is scheduled to take place from September 27 to October 6, 2019, at the multi-purpose Khalifa International Stadium in Doha, Qatar. However, men's javelin throw Group B competition is scheduled to start on October 5, 2019, at 8:30 pm IST. Group A competition will also take place on October 5, 2019, but it will start at 7:30 IST. The finals of the javelin throw competition will take place on October 6, 2019, at 10:25 pm IST.
Despite qualifying for the IAAF World Championships, Neeraj Chopra won’t be participating in the competition because of an injury. Apart from Neeraj, top Indian athletes like Hima Das (400m individual and relay), and Tejaswin Shankar (high jump) will also be missing out due to injury. Neeraj won the 2016 edition of IAAF World U20 championship, and also set the world junior record of 86.48m at the U20 championships. Chopra was then selected to become the flag-bearer at the opening ceremony for India at the 2018 Asian Games, which marked his first Asian Games appearance.
An athlete has to use only one arm and throw a metal-tipped javelin as far as possible. The athlete must hold 800g, 2.6m-2.7m long javelin by its corded grip with his little finger closest to the tip of the implement. For the throw to be measured, an athlete has to throw the javelin over his shoulder, and he should keep in mind to not cross the scratch line. The athlete must not turn his or her back to the landing area at any stage during their approach and throw. The most important rule is that the javelin must also land tip first and within the marked 29-degree sector. Athletes are given four or six chances to throw a Javelin in a competition. In the event of a tie, the winner will be the athlete with the next-best effort.