Answer
Sainz Jr. has won two Formula 1 races by 2023. He won the 2020 Italian Grand Prix and the 2023 British Grand Prix. The 2020 Italian Grand Prix was his first Formula 1 victory, and he came from behind to win the race after starting in fourth place. The 2023 British Grand Prix was his second Formula 1 victory, and he won the race after starting in third place.