Acapulco (Mexico), Feb. 25 -- Britain's Cameron Norrie has been beaten by teenage American qualifier Learner Tien in the opening round of the Mexican Open here.

Norrie, who is now 74th in the world, was beaten 7-6 (7-5) 6-3 by the 19-year-old, who is ranked nine places below him.

The Briton had won the only previous meeting between the pair, in Hong Kong earlier this year, the BBC reported.

Tien led 4-1 in the opener before Norrie recovered and served for the set at 5-4. But he was broken and Tien went on to take the subsequent tie-break and control the match after that.

Second seed Casper Ruud advanced to round two by beating France's Arthur Rinderknech 6-4 6-3 while American pair Tommy Paul and Ben Shelton, the third and fifth seeds r...