Jack Draper continued his fine form at the Mexican Open by beating Miomir Kecmanovic to reach the semi-final.
The British number three broke twice in each set as he cruised past the Serb, who is ranked three places below him in the world at 53rd, 6-3 6-3 in Acapulco.
Draper, 22, takes on defending champion and world number nine Alex de Minaur in the last four on Saturday.
The Australian fought back to beat Greek fifth seed Stefanos Tsitsipas 1-6 6-3 6-3 in his quarter-final.
Draper beat both Kecmanovic and American Tommy Paul, who he defeated in his opening match in Acapulco, en route to the final of the Adelaide Open in January, where he lost to Czech player Jiri Lehecka.
Danish second seed Holger Rune faces the winner of the quarter-final match between American Ben Shelton and Norwegian Casper Ruud in the other semi-final.