US Open winner Stan Wawrinka made hard work of his Swiss Indoors clash with qualifier Marco Chiundinelli before reaching the second round.
Updates from Wednesday's matches at the Erste Bank 500 Open in Vienna - watch live on Sky Sports 2.
Sign in to watch action from the Erste Bank Open in Vienna, with Andy Murray in action against Martin Klizan on Wednesday.
Madison Keys serves her way to victory over Dominika Cibulkova as world No 1 Angelique Kerber secures second win.
Andy Murray’s bid to overthrow Novak Djokovic as the world No 1 continues on Wednesday on Sky Sports.
We recall previous meetings between Andy Murray and Novak Djokovic ahead of the Paris Masters and the ATP World Tour Finals in London.
Jamie Murray has been awarded an OBE for services to his sport and charity.
Britain’s Kyle Edmund was forced to pull out of his first round match with David Ferrer at the Erste Bank Open in Vienna with a hip injury.
Andy Murray feels that consistency on court has given him an opportunity to overtake Novak Djokovic and become world No 1.
Second seed Tomas Berdych suffered a shock defeat to unheralded Georgian Nikoloz Basilashvili at the ATP Erste Bank Open.
Svetlana Kuznetsova opened her WTA Finals account in bizarre fashion with a three-set win over Agnieszka Radwanska in Singapore.
It would be "unfair" on Andy Murray if he ended his career without being a world number one, says Barry Cowan.
Andy Murray continues his quest to usurp Novak Djokovic as world No 1 when he targets 500 ATP ranking points at the Erste Bank Open in Vienna this week.
Home favourite Dominic Thiem beat Andy Murray to claim the £204,000 jackpot in the second edition of Tie Break Tens in Vienna.
Juan Martin del Potro has claimed his first ATP title for almost three years after defeating Jack Sock in Stockholm.
Pablo Carreno Busta secured his second title of the season when he rallied for a three-set win over Fabio Fognini in the final of the Kremlin Cup.
Richard Gasquet secured his 14th ATP Tour title with a straight sets win over Diego Schwartzman in the European Open final.
Angelique Kerber and Simona Halep up and running with wins at WTA Finals
Monica Niculescu stunned top seed Petra Kvitova in the final of the WTA Tour's Luxembourg Open.
Kyle Edmund's run at the European Open in Antwerp was ended at the semi-final stage by third seed Richard Gasquet.