Marin Cilic made a winning start in Singapore as he attempts to match a feat achieved by only five other active players in the ATP Tour.
After a sensational 2020 for Bayern Munich, Robert Lewandowski has been nominated for the Laureus World Sportsman of the Year Award.
Coco Gauff continued her impressive run in Adelaide, while home favourite Ash Barty suffered a surprise defeat.
Denied his Australian Open wildcard by a positive COVID-19 result, Andy Murray finally got his season started in disappointing fashion.
Johanna Konta was eliminated in Adelaide but there were no such problems for French Open champion Iga Swiatek.
Andy Murray does not believe the next generation of tennis players are close to dethroning world number one Novak Djokovic.
There was no victorious return for Jo-Wilfried Tsonga as he made his comeback from injury with a loss to Sebastian Korda.
Ash Barty will begin her WTA Adelaide International title defence against Danielle Rose Collins, who overcame Zheng Saisai.
After winning the Australian Open, Novak Djokovic confirmed he had been playing with a torn oblique muscle.
Novak Djokovic and Rafael Nadal have won 10 of the past 11 grand slams as the greats continue to dominate.