French Open tennis champion Rafa Nadal made a successful transition from clay to grass with a straigh sets win over Slovakia's Lukas Lacko to join his great rival Roger Federer in the quarter-finals of the Halle Open in Germany.
Nadal, playing at Halle for the first time since a first-round exit in 2005, needed a little time to settle before overcoming Lacko in 76 minutes to set up a meeting with champion Philipp Kohlschreiber.
Nadal won a record seventh French Open title on Tuesday.
Five-times champion Federer, who has the road leading to the tournament stadium named after him, beat Florian Mayer to maintain his unbeaten record over the German having won their three previous matches.
Second seed Federer next faces Canadian Milos Raonic in the Wimbledon warm-up event.
