Lorenzo Musetti advanced to his first semifinals appearance at the French Open Tuesday with a four-set win over Frances Tiafoe. Musetti held off Tiafoe despite receiving an unsportsmanlike conduct warning in the second set after inadvertently hitting a line judge with a ball he kicked toward the back wall at Roland-Garros out of frustration.

Lorenzo Musetti used his sleek one-handed backhand and sprint-then-slide court coverage to reach his first semifinal at the French Open, and second at a Grand Slam

Frances Tiefoe was in a fiery mood during his French Open quarter-final defeat to Lorenzo Musetti as he was twice involved in angry exchanges with the chair umpire