Alexander Zverev and Arthur Fils clash in heated Hamburg Open final after Frenchman unleashes controversial underarm serve - as umpire is forced to SEPARATE the two players
![Alexander Zverev and Arthur Fils clash in heated Hamburg Open final after Frenchman unleashes controversial underarm serve - as umpire is forced to SEPARATE the two players](https://i.dailymail.co.uk/1s/2024/07/22/09/87614713-0-image-a-24_1721636957998.jpg)
World No 4 Zverev - who was born in Hamburg - was facing off against the 20-year-old Frenchman hoping to make it back-to-back titles in his home city.