A set up against a man he'd never lost to, Roger Federer looked to be cruising toward a shot at a seventh ATP Finals title. David Goffin had other ideas.
The Belgian rallied in the semifinals on Saturday to claim the biggest win of his career and stun the favorite 2-6, 6-3, 6-4.
"It is the best win of my career, for sure," said Goffin, who lost all six of his previous encounters against Federer.
"I started to feel the ball better at the end of the first set, so I wanted to be more aggressive. It paid off. I started to serve well. My forehand was going much better."
His opponent on Sunday in the final will be Grigor Dimitrov after the...