Switzerland's Roger Federer eats pizza with ball kids after defeating Argentina's Juan Martin del Potro in their final match in the Swiss Indoors ATP 500 in Basel.

Roger Federer celebrates his eighth Basel title after defeating Juan Martin del Potro in the final.

Roger Federer celebrates his eighth Basel title after defeating Juan Martin del Potro in the final.

Ivan Dodig and Marcel Granollers lift the trophy at the Swiss Indoors Basel.

Roger Federer defeats Juan Martin del Potro to claim his eighth title at his hometown tournament in Basel.

Juan Martin del Potro sets a blockbuster final against Roger Federer at the Swiss Indoors Basel.

Roger Federer was on fire in reaching his eighth final of the season, in Basel.

Juan Martin del Potro advances to the Swiss Indoors Basel final after a win against Marin Cilic.

Top seed Roger Federer rallies past Frenchman Adrian Mannarino in their quarter-final match at the Swiss Indoors Basel.

Juan Martin del Potro battles past Roberto Bautista Agut on Friday for a place in the Basel semi-finals.

Roger Federer continues his pursuit of an eighth title in his hometown, Basel.

Benoit Paire took some time off during the Swiss Indoors Basel to visit the Läckerli House and prepare the famous cookie speciality.

Juan Martin del Potro reaches the second round of the Swiss Indoors Basel on Wednesday.

Roger Federer begins his pursuit of an eighth title in Basel with a victory against #NextGenATP American Frances Tiafoe.

Marco Chiudinelli receives a fond farewell from his home crowd, including childhood friend Roger Federer, following his final singles match Monday at the Swiss Indoors Basel.

Denis Shapovalov guaranteed his spot in the inaugural Next Gen ATP Finals with his win over Yuichi Sugita in Basel on Monday.

Roger Federer looks to earn his eighth title in Basel after missing the tournament last season due to injury.