Upset alert! Zverev knocks out Alcaraz

IMAGE: Germany's Alexander Zverev after winning his singles group stage match against Spain's Carlos Alcaraz. Photograph: Gugliemo Mangiapane/Reuters Twice ATP Finals champion Alexander......

ATP Finals: Ailing Alcaraz outclasses Rublev

IMAGE: Spain's Carlos Alcaraz reacts after winning his singles group stage match against Russia's Andrey Rublev. Photograph: Guglielmo Mangiapan / Reuters  Spain's Carlos Alcaraz......

Sick Alcaraz struggles: Can he recover in time?

IMAGE: An off-colour Carlos Alcaraz lost 6-1, 7-5 to Norway's Casper Ruud in his opening match. Photograph: Guglielmo Mangiapane/Reuters World number three Carlos Alcaraz is unlikely to be at his......

ATP Finals: Fritz fizzles out, Sinner cruises to victory

IMAGE: Italy's Jannik Sinner reacts during his singles group stage match against Taylor Fritz of the US. Photograph: Guglielmo Mangiapane/Reuters World number one Jannik Sinner made it two wins......

ATP Finals: Alcaraz given Ruud awakening with defeat

IMAGE: Spain's Carlos Alcaraz reacts during his men's singles group stage match against Norway's Casper Ruud. Photograph: Guglielmo Mangiapane/Reuters Carlos Alcaraz suffered a shock 6-1, 7-5......