
SAINT-PETERSBURG, RUSSIA - SEPTEMBER 24: Damir Dzumhur (C) of Bosnia and Herzegovina celebrates his victory with his trophy after his match against Fabio Fognini of Italy within the St. Petersburg Open ATP tennis tournament final match in St.Petersburg, Russia on September 24, 2017. ( Sergey Mihailicenko - Anadolu Agency )

SAINT-PETERSBURG, RUSSIA - SEPTEMBER 24: Damir Dzumhur of Bosnia and Herzegovina celebrates his victory with his trophy after his match against Fabio Fognini of Italy within the St. Petersburg Open ATP tennis tournament final match in St.Petersburg, Russia on September 24, 2017. ( Sergey Mihailicenko - Anadolu Agency )

SAINT-PETERSBURG, RUSSIA - SEPTEMBER 24: Damir Dzumhur of Bosnia and Herzegovina celebrates his victory with his trophy after his match against Fabio Fognini of Italy within the St. Petersburg Open ATP tennis tournament final match in St.Petersburg, Russia on September 24, 2017. ( Sergey Mihailicenko - Anadolu Agency )

SAINT-PETERSBURG, RUSSIA - SEPTEMBER 24: Fabio Fognini (L) of Italy celebrates Damir Dzumhur (R) of Bosnia and Herzegovina during the St. Petersburg Open ATP tennis tournament final match in St.Petersburg, Russia on September 24, 2017. ( Sergey Mihailicenko - Anadolu Agency )

SAINT-PETERSBURG, RUSSIA - SEPTEMBER 24: Damir Dzumhur of Bosnia and Herzegovina celebrates his victory after his match against Fabio Fognini of Italy within the St. Petersburg Open ATP tennis tournament final match in St.Petersburg, Russia on September 24, 2017. ( Sergey Mihailicenko - Anadolu Agency )

SAINT-PETERSBURG, RUSSIA - SEPTEMBER 24: Damir Dzumhur of Bosnia and Herzegovina celebrates his victory after his match against Fabio Fognini of Italy within the St. Petersburg Open ATP tennis tournament final match in St.Petersburg, Russia on September 24, 2017. ( Sergey Mihailicenko - Anadolu Agency )

SAINT-PETERSBURG, RUSSIA - SEPTEMBER 24: Damir Dzumhur of Bosnia and Herzegovina in action against Fabio Fognini of Italy during the St. Petersburg Open ATP tennis tournament final match in St.Petersburg, Russia on September 24, 2017. ( Sergey Mihailicenko - Anadolu Agency )

SAINT-PETERSBURG, RUSSIA - SEPTEMBER 24: Damir Dzumhur of Bosnia and Herzegovina gestures during his match against Fabio Fognini of Italy within the St. Petersburg Open ATP tennis tournament final match in St.Petersburg, Russia on September 24, 2017. ( Sergey Mihailicenko - Anadolu Agency )

SAINT-PETERSBURG, RUSSIA - SEPTEMBER 24: Damir Dzumhur of Bosnia and Herzegovina gestures during his match against Fabio Fognini of Italy within the St. Petersburg Open ATP tennis tournament final match in St.Petersburg, Russia on September 24, 2017. ( Sergey Mihailicenko - Anadolu Agency )

SAINT-PETERSBURG, RUSSIA - SEPTEMBER 24: Damir Dzumhur of Bosnia and Herzegovina gestures during his match against Fabio Fognini of Italy within the St. Petersburg Open ATP tennis tournament final match in St.Petersburg, Russia on September 24, 2017. ( Sergey Mihailicenko - Anadolu Agency )

SAINT-PETERSBURG, RUSSIA - SEPTEMBER 24: Damir Dzumhur of Bosnia and Herzegovina in action against Fabio Fognini of Italy during the St. Petersburg Open ATP tennis tournament final match in St.Petersburg, Russia on September 24, 2017. ( Sergey Mihailicenko - Anadolu Agency )

SAINT-PETERSBURG, RUSSIA - SEPTEMBER 24: Damir Dzumhur of Bosnia and Herzegovina in action against Fabio Fognini of Italy during the St. Petersburg Open ATP tennis tournament final match in St.Petersburg, Russia on September 24, 2017. ( Sergey Mihailicenko - Anadolu Agency )

SAINT-PETERSBURG, RUSSIA - SEPTEMBER 24: Damir Dzumhur of Bosnia and Herzegovina in action against Fabio Fognini of Italy during the St. Petersburg Open ATP tennis tournament final match in St.Petersburg, Russia on September 24, 2017. ( Sergey Mihailicenko - Anadolu Agency )