Updated: September 22, 2012, 9:44 AM ETAssociated Press
Robson had nine aces but was let down by her serve, offering 22 break opportunities to Hsieh and hitting 11 double faults.
Hsieh, who made the third round at Wimbledon this year and is ranked 53rd, broke six times and dropped serve on five occasions in the match.
The 18-year-old Robson became the first British woman in 22 years to make a WTA final. She made the last 16 of the US Open and won a mixed doubles silver at the London Olympics with U.S. Open champion Andy Murray.
Copyright 2012 by The Associated Press