Stanislas Wawrinka beat Feliciano Lopez 6-3 3-6 6-3 at the Paris Masters to end Nicolas Almagro's World Tour Finals chances.
Roger Federer confirmed his spot at the end of season ATP Tour finals by reaching the third round of the Paris Masters.
Jo-Wilfried Tsonga double-faulted on match point to lose to Kei Nishikori and fail to qualify for the World Tour Finals.
Marin Cilic won his first match since returning from a doping ban with a 5-7 6-1 6-4 success against Igor Sijsling in Paris.
Round-up: Top seed David Ferrer beat Gael Monfils 6-3 6-2 as he opened his bid for a fourth Valencia Open.
Tommy Haas edged past near namesake Robin Haase 6-3 4-6 6-4 to lift his 15th career title at the Vienna Open on Sunday.
Richard Gasquet boosted his chances of playing in next month's season-ending ATP World Tour Finals after capturing the Kremlin Cup.
ATP round-up: Jo-Wilfried Tsonga was upset in straight sets by world number 63 Robin Haase in the Erste Bank Open semi-finals.
ATP round-up: Jo-Wilfried Tsonga edged a gripping quarter-final against Dominic Thiem to reach the Erste Bank Open semis.
Roger Federer went out of the Shanghai Masters at the last-16 stage as he lost to world number 42 Gael Monfils.
Round-up: Novak Djokovic and Rafael Nadal were in superb form to advance to the last eight of the Shanghai Masters.
John Isner was pushed hard before coming through a tough opening match at the Shanghai Masters.
ATP World Tour rankings on Monday (last week's positions in brackets):
ATP World Tour Finals
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