World No. 1 Rafael Nadal and world No. 2 Novak Djokovic took to the courts on Friday at the ATP Cup. Here are the Top 5 Photos from January 4. (All photos by Getty Images)

1

Rafael Nadal played under the lights in Perth, helping Spain ease its way to a 3-0 win over Georgia. 

2

Nadal's efforts were made easier thanks to Roberto Bautista Agut's 6-0, 6-0 demolition of Georgia's Aleksandre Metreveli.

3

Team Italy enjoyed a day off with coffee and photo-ops at The Cheeky Sparrow in Perth. 

4

Also having a day off in Perth, Team U.S.A. threw the honorary pitches at the Harley Davidson Ballpark.

5

Novak Djokovic picked up his first win of 2020 over Kevin Anderson, clinching Serbia's win over South Africa.