 On 29 April 2018, she won her fourth consecutive European Championships title in her home soil Huelva, Spain, by beating Evgeniya Kosetskaya with score of 21–15, 21–7 in the final.On 5 August, she won the title in the World Championships by defeating P. V. Sindhu of India in straight games 21–19, 21–10, making her the first female player in history to win three World Championships title.Marín began her 2019 season with a runner-up effort at the Malaysia Masters, where she lost to Ratchanok Intanon in straight games.