 Marín started the 2020 season at the Southeast Asian tour in a positive note; reaching the semi-finals of Malaysia Masters where she lost to Chen Yufei.She then reached the final of Indonesia Masters in successive week, where she narrowly missed the title after getting defeated from Ratchanok Intanon in three games 19–21, 21–11, 18–21.She continued her good form and thereafter reached the semi-finals of Thailand Masters, which she lost to top seed Akane Yamaguchi in a close rubber games.