Singles alternate Sam Querrey gives his thoughts on the Group Pete Sampras clash between Dominic Thiem and Pablo Carreno Busta, with Carreno Busta competing in his first match at the Nitto ATP Finals.
In this edition of ATPWorldTour.com's Best of 2017 series, Dominic Thiem relaxes after a practice session at The O2 by playing a game of fetch with one of the sniffer dogs, Jack.
It's not often that an alternate steps into the fray at the Nitto ATP Finals and has the chance to make an immediate impact. But that's exactly the opportunity that awaits Pablo Carreno Busta on Wednesday in London. Carreno Busta will be thrown into the cauldron under the bright lights and vibrant atmosphere at The O2, with a spot in the semi-finals still very much up for grabs. The Spaniard entered the tournament when countryman Rafael Nadal withdrew due to a right knee injury. "I dreamt a lot of times to be here and play," said Carreno Busta on Tuesday. "I think it's a big opportunity for me. I will try to do my best. I think I have no...