10 in the ATP Rankings, was forced to dig deep in windy conditions after falling behind early in both sets. Shelton, however, responded each time to maintain his unbeaten run in Montreal this week and secure his 30th victory of the season. So to come through with a win against a really high-quality player like Joao is huge for me,” Shelton was quoted by ATP. The opening set saw both players exchange breaks before Shelton found the decisive opening at 4-3. The quarter-final will pit two former Masters 1000 champions against each other, with Shelton and Mensik now the only players remaining in the Montreal draw to have previously won at that level.