LONDON (Reuters) - Stanislas Wawrinka qualified for the semi-finals of the end-of-season ATP World Tour finals as he quickly secured the three games he needed against Marin Cilic on Friday. When Wawrinka broke the Croatian’s serve to move into a 3-1 lead in the opening set of their final round-robin match, it guaranteed that he would make it to the last four for a second successive year and play his Swiss compatriot and great friend, Roger Federer, in Saturday’s semi-finals at the O2 Arena.
Earlier, champion Novak Djokovic had defeated Tomas Berdych 6-2 6-2 to ensure he would meet Japan’s Kei Nishikori in Saturday’s first semi-final.