TURIN, Italy — Spain’s Carlos Alcaraz made light of feeling under the weather as he dispatched Russia’s Andrey Rublev in impressive fashion to revive his ATP Finals hopes on Wednesday.

The Spanish four-time Grand Slam champion has been suffering with respiratory issues in Turin and wore pink nasal tape against Mr. Rublev in a resounding 6-3 7-6(8) victory.

In the late match in the John Newcombe group, two-time former champion Alexander Zverev, the world number two, underlined his superb late-season form to beat Norway’s Casper Ruud 7-6(3) 6-3 for his second victory of the week.

None of the eight men’s singles matches so far at this year’s season-ender have gone to three sets.

Third seed Mr. Alcaraz, bidding to win the title for the first time, looked far sharper than during his opening group match which ended in a straight-sets defeat by Mr. Ruud.

After sharing the opening six games, Mr. Alcaraz broke Mr. Rublev’s serve with a scorching forehand winner and reeled off five successive games to seize control of the match. — Reuters