London • David Goffin is into the last four of the ATP Finals, to go any further he'll have to do something he's never done before: beat Roger Federer.
From 0-3, 0-15 down in the opening set, Goffin won 15 consecutive points to take control of the match, and never looked back.
Dimitrov defeated Pablo Carreno Busta 6-1, 6-1 in the late match to become the first player to win all three round-robin matches on debut since Andy Murray in 2008.
When Thiem finally ended his opponent's run of five straight games, Goffin kept his composure to serve out the set.