Twice ATP Finals champion Alexander Zverev outclassed four-times major winner Carlos Alcaraz 7-6(5) 6-4 to progress to the semi-finals of the season-ending championship on Friday and leave the Spaniard on the brink of elimination.
German Zverev came into the contest as the group leader with two wins from two matches — against eighth-seeded Russian Andrey Rublev and Norwegian sixth seed Casper Ruud — but needed to win at least one
