Rafael Nadal enjoyed a straightforward beginning to his campaign at the 2020 ATP Finals, beating Andrey Rublev 6-3 6-4.
The Spaniard has never yet won the year-end showpiece event, and was expected to have a tough test against the in-form Rublev.
Indeed, the Russian went into the match with a tour-leading 40 victories across the course of the season.
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But the fine form meant nothing in the O2 Arena, where his serve was easily dismantled by the world number two.
He also failed to muster a single break point opportunity in the entire match as Nadal cruised to his first straight-sets victory in the Finals since 2016.
Nadal will play Dominic Thiem next - who also enjoyed a comfortable win in his opener against Stefanos Tsitsipas.
"I think it's a positive start," Nadal said.
"Always here the first match is tricky. You are playing the best of the best. Now I have a super tough match against Dominic."
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