Defending champion powers into the last 16 of the Miami Open along with Kei Nishikori and Milos Raonic.
Top tennis player wonders about letting his nerves get to him in the big moments of matches.
A struggling Rafa Nadal crashed out of the Miami Open in the third round, losing to Fernando Verdasco.
Scottish tennis star Andy Murray is just one win away from setting a new British record in the open era.
South Korean teen wins his first ATP Tour-level match at the Miami Open, stunning Marcel Granollers.