Brits Heather Watson and Naomi Broady were sent packing from the Biel Bienne Open in Switzerland, losing in straight sets to Anett Kontaveit and Julia Goerges respectively.
Both were first-round matches, with Watson beaten in 93 minutes, as she slipped to a 7-6 (7-2) 6-2 defeat by her Estonian opponent.
The Guernsey-born player led 3-1 in the first set and, despite saving a set point in game 10, was out-played in the tie-break.
Watson, the world No 110, then fell away badly in the second set during which she was broken twice.
The 21-year-old Kontaveit, ranked 11 places higher in the standings, conceded just four points on her own serve in the second set and sealed victory on her first match point.
As for Broady, ranked 124, she was knocked out by the seventh-seeded German who cruised to a 6-4 6-2 win in 71 minutes.
The 27-year-old from Stockport led 2-0 in the opening set before losing 10 of the next 12 games.
So dominant was the Goerges serve, the world No 46 lost just five points in her last eight service games.