Pakistan, Aug. 15 -- Ben Shelton won the Canadian Open for a second straight year with a 6-3 7-6(4) victory over fellow American Brandon Nakashima on Thursday, claiming his second Masters 1000 crown and picking up a seventh career title.

The all-American final was the first at Masters 1000 level since Andy Roddick beat Mardy Fish in Cincinnati in 2003 and offered an encouraging sign for US men's tennis ahead of the US Open, where the country has not had a men's singles champion since Roddick's triumph that same year.

Shelton arrived in Canada after a frustrating stretch of results, having suffered a first-round exit at Wimbledon, a second-round defeat at Roland Garros and managed just one win across his first four Masters 1000 events of...