Novak leaves nothing to doubt

Djokovic brushes off early jitters to trounce Thiem in Finals opener

After surviving an early setback, Novak Djokovic made it look all too easy on Sunday as the No 2-ranked Serb rallied to beat Austria's Dominic Thiem 6-7 (10), 6-0, 6-2 in his opening match at the season-ending ATP Finals.

Djokovic won nine of 10 games to take control of the match after losing the first set in a tiebreaker. And even that was close.