The decathlon is a combined event in athletics consisting of ten track and field events. The word "decathlon" was formed, in analogy to the word "pentathlon", from Greek δέκα and ἄθλος. Events are held over two consecutive days and the winners are determined by the combined performance in all. Performance is judged on a points system in each event, not by the position achieved. The decathlon is contested mainly by male athletes, while female athletes typically compete in the heptathlon.
The European Athletics U20 Championships are the European championships for athletes who are 19 years of age or under, which is the age range recognised by the IAAF as junior athletes. The event is currently organized by the European Athletic Association.
The 2018 World Junior Ice Hockey Championships was the 42nd edition of the Ice Hockey World Junior Championship, and was hosted by the city of Buffalo, New York at the KeyBank Center and HarborCenter. It opened on December 26, 2017 and closed with the gold medal game on January 5, 2018. It was the sixth time that the United States has hosted the IHWJC, and the second time that Buffalo has done so, previously hosting in 2011.
Diving at the 2017 World Aquatics Championships was held between 14 and 22 July 2017 in Budapest, Hungary.
The Men's 1 metre springboard competition at the 2017 World Championships was held on 14 and 16 July 2017.
The Men's 3 metre springboard competition at the 2017 World Championships was held on 19 and 20 July 2017. In a surprise finish, the top three men from the semifinals all failed to reach the podium.
The Men's 10 metre platform competition at the 2017 World Championships was held on 21 and 22 July 2017.
The Men's synchronized 3 metre springboard competition at the 2017 World Championships was held on 15 July 2017.
The Men's synchronized 10 metre platform competition at the 2017 World Championships was held on 17 July 2017.
The Women's 1 metre springboard competition at the 2017 World Championships was held on 14 and 15 July 2017.
The Women's 3 metre springboard competition at the 2017 World Championships was held on 20 and 21 July 2017.
The Women's 10 metre platform competition at the 2017 World Championships was held on 18 and 19 July 2017.
The Women's synchronized 3 metre springboard competition at the 2017 World Championships was held on 17 July 2017.
The Women's synchronized 10 metre platform competition at the 2017 World Championships was held on 16 July 2017.
The Men competition at the 2017 World Championships was held on 28 and 30 July 2017.
