Jo-Wilfried Tsonga double-faulted on match point to lose to Kei Nishikori and fail to qualify for the World Tour Finals.
Novak Djokovic started his Paris Masters campaign with a routine second-round 7-6(3) 6-3 win over Pierre-Hugues Herbert.
Roger Federer beat Vasek Pospisil to set up a final with defending champion Juan Martin del Potro at the Basel Open.
Roger Federer ended Grigor Dimitrov's seven-match winning streak and showed the Bulgarian he has some way to go to live up to his 'Baby Federer' tag with a 6-3
Roger Federer continued his good home run to beat Grigor Dimitrov 6-3 7-6(2) and reach the semi-finals in Basel.
Juan Martin del Potro dismantled Marcos Baghdatis to progress to the quarter-finals of the Basel Open in Switzerland.
Tomas Berdych and Stanislas Wawrinka were both ousted from the Swiss Indoors event in Basel in surprise first-round results.
ATP round-up: Jo-Wilfried Tsonga edged a gripping quarter-final against Dominic Thiem to reach the Erste Bank Open semis.
Teenage wildcard Karen Khachanov shocked third seed Janko Tipsarevic in straight sets at the Kremlin Cup in Moscow.
Order of play for day four of the US Open, with Rafa Nadal, Roger Federer, Serena Williams and Victoria Azarenka all on court.
Round-up: Roger Federer got his hardcourt season off to a positive start with straightforward win over Phillip Kohlschreiber.
Jamie Murray and John Peers won the ATP Gstaad doubles title with a 6-3 6-4 win over Pablo Andujar and Guillermo Garcia-Lopez.
World number five Roger Federer strolled past Jan Hajek to progress into the quarter-finals of ATP Hamburg with a 6-4 6-3 win.
Round-up: Roger Federer cruised into the second round of Wimbledon following a 6-3 6-2 6-0 win over Victor Hanescu.
ATP World Tour Finals
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