Dominic Thiem landed one too many punches even for Novak Djokovic to handle. In a seesawing crowd pleaser that lasted nearly three hours and featured a handful of momentum shifts in the third set, Thiem outlasted Djokovic 6-7 (5), 6-3, 7-6 (5) on Tuesday to become the first player to advance from the group stage at the ATP Finals. ''It was maybe the best match I ever played,'' said Thiem, a two-time French Open runner-up.