Andy Murray extended his perfect record to six sets played and six sets won this season on grass courts, but he beat a different class of opponent Friday in his latest outing at the Surbiton Trophy.

The top seed at the ATP Challenger Tour event in his home nation, Murray defeated #NextGenATP American Brandon Nakashima, 6-4, 7-6(1), to advance to the weekend’s semi-finals. One break was enough for the former World No. 1, who fired 11 aces and saved the only two break points he faced. 

Watch Full Match Replay

In a tightly contested match, Murray edged the fifth-seeded Nakashima in win rate on both first serve (82% to 79%) and second serve (56% to 54%). It was the pair’s first professional meeting.

Murray powered past Jurij Rodionov and Gijs Brouwer in the opening two rounds, winning a pair of tie-breaks against the 26-year-old Dutchman Brouwer on Thursday. He next faces another American, seventh seed Denis Kudla, who scored a 6-4, 7-6(4) victory against Aussie Max Purcell in the quarter-finals.