Year-end world No 1 Novak Djokovic began his quest for a sixth ATP Finals title with a comfortable opening round-robin win against Casper Ruud in Turin on Monday. "I think it was the first one [a perfect hat-trick for England]. I've had one for Spurs before, it was nice to finish that one with a good finish at the end there. "As I said, we want experienced players to show that they're prepared to dig deep and then we want the young guys to show that they can step up. We saw a little bit of that against Tonga, but that'll be tested more fully by Australia [on Saturday]." "We don't know," he said. "We're going to rest. We need the rest."© 2021 Sky UKNFLNewsAmerican Football Expert & ColumnistLast Updated: 12/11/21 5:33pm