Australian Open 2021: ‘I don’t know!’ – Rafael Nadal unsure whether back will hold out

Rafa Nadal was pleased with a positive start to the Australian Open on Tuesday but remains unsure whether his back will hold up to the rigours of five-set tennis. The 2021 Australian Open is live on Eurosport. Watch every match live and ad-free on the Eurosport app and eurosport.co.uk. You can download the Eurosport app for iOS and Android now.