The inaugural ATP Cup in Australia has entered the knockout stages, and the world's two best players are aiming to guide their teams into the semi-finals. World No 1 Rafael Nadal ensured Spain earned a perfect 9-0 record during the group stages, while second-ranked Novak Djokovic won all of his three singles matches to ensure Serbia topped their group. Both players will be back in action on Friday when Spain take on Belgium and Serbia face Canada. For Nadal, that means a match against world No 11 David Goffin, while Djokovic will play world No 14 Denis Shapovalov. Ahead of their respective matches, Nadal and Djokovic both took the practice courts on their rest day, and you can see photos from those training sessions in the gallery above. To move on to the next photo, click on the arrows, or if using a mobile device simply swipe.
