 On 17 September, Fati made his Champions League debut in a 0–0 away draw against Borussia Dortmund, becoming the youngest player to feature for Barcelona in the competition at the age of 16 years and 321 days, breaking the previous record held by Bojan Krkić (17 years and 22 days); he also became the third-youngest player ever to appear in the competition.On 10 December, Fati became the youngest goalscorer in UEFA Champions League history at the age of 17 years and 40 days when he scored the game winner in Barcelona’s 2–1 victory over Inter Milan at the San Siro.On 2 February 2020, Fati became the youngest player to score a brace in La Liga, scoring both goals in Barcelona’s 2–1 win over Levante UD.