British number six Brydan Klein has reached the quarter-finals of the Aegon Surbiton Trophy with a straight-sets victory over Frederik Nielsen.
Klein, who defeated James Ward on Tuesday, came through in two tie-break sets to book a last-eight contest with John Patrick-Smith.
World number 319 Joshua Milton has also progressed through to the quarter-finals after securing a surprise win over Luke Saville.
Milton, the British number eight, ran out a 6-4 7-6 winner against the Australian, who reached the final of the Aegon Manchester Trophy last weekend.
Ireland's James McGee will provide the next opposition for Milton after he registered a 6-3 6-4 success over Belgium's Maxime Authom.
