REUTERS: Australia's Ash Barty has reclaimed the number one spot in the WTA rankings less than a month after losing it while US Open champion Bianca Andreescu moved up to a career-high fifth after her maiden Grand Slam win in New York. Andreescu beat Serena Williams 6-3 7-5 in Saturday's final to maintain a 13-match unbeaten run, where she also won the Canadian Open, to break into the top 10 for the first time in her career. Advertisement Advertisement "I don't want to take anything for granted. These are the moments you live for and I'm just beyond blessed," Andreescu, who moved up 10 places, told Reuters. After taking the first set and leading 5-1 in the second, Andreescu was broken twice by 23-times Grand Slam winner Williams before eventually breaking back and winning the contest to become the first Canadian to win a major in the professional era. "It definitely wasn't easy in the final against Serena Williams," the 19-year-old added. "I think I'..