Thiem keeps hopes alive with belated ATP Finals win
By Martyn Herman
Thiem now needs South African Anderson to beat six-times champion Roger Federer comfortably in the day's second singles to have a chance of reaching the last four.
That scenario would leave Thiem, Federer and Nishikori on one win each -- meaning second place in the group would be decided by sets percentages and then games percentages.
Nishikori could not qualify in that scenario after suffering a 6-0 6-1 defeat by Anderson followed by another heavy defeat at the hands of Thiem on Thursday.
Federer, who bounced back from his loss against Nishikori to beat Thiem in his second match, effectively needs to win one set against Anderson to reach the semi-finals at the tournament for the 15th time in 16 appearances. (Reporting by Martyn Herman Editing by Toby Davis)