Tsitsipas beats Federer to reach ATP Finals final
Stefanos Tsitsipas kept his nerve in the key moments to beat six-time champion Roger Federer 6-3, 6-4 on Saturday and reach the final of the season-ending ATP Finals.
Tsitsipas saved 11 of 12 break points and took advantage of an error-filled performance from Federer, who continually put his opponent under pressure only to come up short when it mattered.
The Greek player next faces defending champion Alexander Zverev or Dominic Thiem.
Tsitsipas, who is making his first appearance at the event, saved all six break points he faced in the first set. That included two at 5-3, when he needed seven set points before finally winning a marathon game.
He broke again for a 2-1 lead in the second, then saved three break points from 0-40 in the next game before Federer finally converted his fourth to level the set.
But the 21-year-old Tsitsipas broke again...