 Complete the following phrase:  At the 2018 European Athletics U18 Championships, Nacheva won silver in triple jump with 13.88m, behind Spaniard María Vicente with 13.95m. On 15 July 2018 she won gold in triple jump at the 2018 IAAF World U20 Championships, becoming the first Bulgarian athlete to win in the age group since Tezdzhan Naimova in 