The battle for places in the line-up at the ATP World Tour Finals in London is set to go down to the wire ahead of the season finale, live on Sky Sports.
Simona Halep and Caroline Wozniacki stormed to impressive opening victories at the WTA Finals in Singapore on Monday.
Live score updates from the ATP 500 event in Basel. Watch live on Sky Sports Arena and Sky Sports Action.
"Everybody expects him to win a Grand Slam, but he must slow down a little bit and he has to try and enjoy it" - Henri Leconte offers Alexander Zverev advice.
Juan Martin Del Potro made a successful defence of his Stockholm Open title while Jo-Wilfried Tsonga lifted the European Open on Sunday.
Wimbledon champion Garbine Muguruza and Karolina Pliskova both made sensational starts to the WTA Finals in Singapore on Sunday.
Henri Leconte believes "it's been a vintage year" with Rafael Nadal and Roger Federer ruling the roost in 2017.
It's been a fabulous year for women's sport and we are profiling the contenders for the four main prizes, first up it's the 2017 Sunday Times Sportswomen of the Year.
Grigor Dimitrov consolidated his bid to play in a first ATP Finals by reaching the Stockholm final where he will face defending champion Juan Martin del Potro.
The battle between Roger Federer and Rafael Nadal for the year-end top spot could go down to the season-ending ATP World Tour Finals in London.
Germany's Julia Goerges clinched a career third WTA title with a straight-sets win over Daria Kasatkina of Russia in the final of the Kremlin Cup on Saturday.
An unpredictable season will culminate at the WTA Finals, where seven out of eight players can win the trophy and also be crowned year-end world No 1.
Julia Goerges scuppered the prospect of an all-Russian final at the Kremlin Cup
by beating Natalia Vikhlyantseva to a showpiece finale with Daria Kasatkina.
Grigor Dimitrov moved closer to qualifying for the ATP World Tour Finals with a straight- sets victory over Mischa Zverev to reach the semi-finals of the Stockholm Open.
Garbine Muguruza has been named the WTA Player of the Year after she reached No 1 in the rankings and won Wimbledon.
Czech Tomas Berdych is the latest leading player to end his season early due to injury.
On a disappointing evening for Britain's women, Heather Watson and Naomi Broady crashed to quarter-final defeats at the Luxembourg Open.
Nick Kyrgios’ season has come to an abrupt end due to a hip injury.
Nick Kyrgios was again troubled by injury as he crashed out of the European Open to Ruben Bemelmans.
Daniel Altmaier is the latest Sky Sports Scholar to be unveiled and the German tennis star reveals his dreams and passions.
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