Coco Gauff beats Katie Boulter in National Bank Open in Montreal

• American teenager defeats British No 1 6-2, 6-2
• Andy Murray beat Australian Max Purcell 7-6(2), 3-6, 7-5

Katie Boulter's run at the National Bank Open in Montreal ended with defeat by Coco Gauff in the second round.

The British No 1 built on her strong form on grass by winning two matches in qualifying and then defeating the home hope Rebecca Marino in round one, all without dropping a set.