Alexander Bublik of Kazakhstan returns the ball to Andrey Rublev during a semi final match of the Dubai Duty Free Tennis Championships in Dubai, United Arab Emirates, Friday, March 1, 2024. (AP Photo/Kamran Jebreili)
ATP Supervisor Roland Herfel, left, disqualifies Andrey Rublev during his semi final match with Alexander Bublik of Kazakhstan at the Dubai Duty Free Tennis Championships in Dubai, United Arab Emirates, Friday, March 1, 2024. (AP Photo/Kamran Jebreili)
Alexander Bublik of Kazakhstan, left, comforts Andrey Rublev after he was disqualified during a semi final match at the Dubai Duty Free Tennis Championships in Dubai, United Arab Emirates, Friday, March 1, 2024. (AP Photo/Kamran Jebreili)
ATP Supervisor Roland Herfel , left, disqualifies Andrey Rublev during his semi final match with Alexander Bublik of Kazakhstan at the Dubai Duty Free Tennis Championships in Dubai, United Arab Emirates, Friday, March 1, 2024. (AP Photo/Kamran Jebreili)
Daniil Medvedev reacts after losing a ball against Ugo Humbert of France during a semi final match of the Dubai Duty Free Tennis Championships in Dubai, United Arab Emirates, Friday, March 1, 2024. (AP Photo/Kamran Jebreili)
Andrey Rublev reacts in front a linesman during his semi final match with Alexander Bublik of Kazakhstan at the Dubai Duty Free Tennis Championships in Dubai, United Arab Emirates, Friday, March 1, 2024. (AP Photo/Kamran Jebreili)
Ugo Humbert of France celebrates after beating Daniil Medvedev during a semi final match of the Dubai Duty Free Tennis Championships in Dubai, United Arab Emirates, Friday, March 1, 2024. (AP Photo/Kamran Jebreili)
Andrey Rublev leaves the court after being disqualified during a semi final match against Alexander Bublik of Kazakhstan at the Dubai Duty Free Tennis Championships in Dubai, United Arab Emirates, Friday, March 1, 2024. (AP Photo/Kamran Jebreili)
Ugo Humbert of France celebrates after beating Daniil Medvedev during a semi final match of the Dubai Duty Free Tennis Championships in Dubai, United Arab Emirates, Friday, March 1, 2024. (AP Photo/Kamran Jebreili)
Ugo Humbert of France returns the ball to Daniil Medvedev during a semi final match of the Dubai Duty Free Tennis Championships in Dubai, United Arab Emirates, Friday, March 1, 2024. (AP Photo/Kamran Jebreili)