A few hours after old master Roger Federer reminded everyone of his enduring magic, Alexander Zverev, the man leading the next generation of men's tennis, dazzled on his ATP Finals debut.

"It's had more consequences than I thought. I dragged this pain for about three months." Meanwhile, Alexander Zverev came from a break down in both sets to defeat Marin Cilic 7-6 (5), 7-6 (1.

However, Cilic, who amassed 46 unforced errors, allowed Zverev to break straight back. Despite saving a match point at 4-5, Cilic wilted in another tiebreaker to fall to 1-9 across his four ...

Cilic made 46 unforced errors as he gave up a break advantage in both sets in losing to Alexander Zverev 7-6 (5), 7-1 (1) on Monday, dropping the Croat's record at the season-ending tournament to ...

The top 10 players Zverev, Marin Cilic, and Juan Martin del Potro are 6'6", while 6'8" Kevin Anderson is No. 7 and 6'10" John Isner is No. 9 in the rankings.

Marin Cilic is next up for Zverev, the fourth seed having eased into the last four with a 6-3 6-3 triumph over Spain's Pablo Carreno Busta. ZVEREV RALLIES TO EXTEND STREAK ...

Former US Open champion Cilic responded in the best possible way by winning the opening three games of the next set before Zverev got on the board, but he was always playing catch-up and it wasn't ...

Item 1 of 6 Tennis - ATP World Tour Finals - The O2 Arena, London, Britain - November 12, 2017 Germany's Alexander Zverev celebrates winning his group stage match against Croatia's Marin Cilic ...

A few hours after old master Roger Federer reminded everyone of his enduring magic, Alexander Zverev, the man leading the next generation of men's tennis, dazzled on his ATP Finals debut. The 20 ...