JOIN USMurray triumphs in Montreal
A day after replacing Rafael Nadal as world number two, Murray delivered a gritty performance to wear down the towering Argentine in two hours, 42 minutes under a broiling sun.
It was Murray's fifth win of the season and he become the first Briton in 128 years to lift the Canadian title.
The victory completed a perfect start to the North American hardcourt season for the 22-year-old Scotsman, who was returning to action after his semifinal loss to Andy Roddick at Wimbledon.
Del Potro, coming off victory in Washington last week and riding a 10-match winning steak, took a tight opening set in a tie-break 7-4 -- the only set surrendered by Murray all week. Leading 6-5 in the second with Murray about to serve, Del Potro called a medical time-out to have his back massaged, drawing an angry scowl from the unhappy the Briton, who protested the move slamming his towel on a chair.
The time-out, however, appeared to ignite Murray, who went on to win 36 of the next 48 points. Murray moved in for the kill, recording two early breaks to go 4-0 up before finishing the contest with an emphatic ace.
Jankovic wins
A rejuvenated Jelena Jankovic upset world number one Dinara Safina 6-4, 6-2 to win the Cincinnati Open. The fifth-seeded Serb took advantage of an error-strewn display from the Russian to clinch her second title of the year.
Jankovic had come through a two-hour, 46-minute encounter with Elena Dementieva in the semifinals but she looked the fresher and an early break was enough to give her the first set.
Safina had been the most consistent player throughout the week but her feet looked heavy and Jankovic took full advantage.