Zverev seals world number one spot after win

However, Cameron Norrie fell short of his best victory of the season when world number five Daniil Medvedev saved match point to win their last-16 match.

A frustrating year has seen Norrie drop to 41st in the world rankings and exit each of the past three Grand Slam tournaments in the first round.

But the 31-year-old showed his key attributes - tenacity, athleticism and controlled aggression - to threaten a huge upset against Medvedev.

Third seed Medvedev, fresh from winning the Almaty title last week, was left angrily punching the surface when he fell a break down in the deciding set.