British number three Naomi Broady lost 6-4 6-3 to sixth seed Eugenie Bouchard in the Malaysian Open semi-finals.
World number 96 Broady, who beat former Wimbledon finalist Sabine Lisicki in the previous round, was soon 3-1 down to a player ranked 44 places higher.
And in only her second WTA semi-final appearance, the 26-year-old lost the opening set in 38 minutes.
Bouchard, who had won the only previous meeting between the pair in 2012, wrapped things up in 76 minutes.
Elsewhere, British number two Heather Watson reached the semi-finals of the Monterrey Open.