Djokovic takes ’old

®ÊTENNIS

NOVAK DJOKOVIC produced a solid performance to beat German Alexander Zverev at the ATP Finals.

The 31-year-old Serb,

10 years older than his opponent, was made to work hard at first.

But Zverev’s challenge crumbled at London’s

O2 Arena as Djokovic won 6-4 6-1 to edge closer to the semis.