ISTANBUL, Turkey -- Top-ranked Serena Williams breezed past Angelique Kerber 6-3, 6-1 to open her bid for a fourth ATP Championships title on Tuesday. Wholesale Yeezy 350 . Williams, the defending champion, had no trouble against Kerber, who also lost to the American 6-4, 6-1 in the round-robin at this event last year. Kerber was the only player to beat Williams last year - in Cincinnati - after the Americans first-round ouster at the French Open. "Today she was playing unbelievable, and I had actually no chance. I mean, she was serving great and also returning unbelievable," Kerber said. "So I was just giving all I could, but yeah, its tough to play against Serena like this." Williams was particularly effective with her backhand return, the shot she also used on her first match point. Kerber, who had two straight double-faults to surrender the first game of the second set, produced another to give Williams three match points. Although she is 32, considered a ripe age in tennis, Williams is enjoying the finest season in her career, having already won 10 titles. She added the French Open and U.S. Open titles to bring her Grand Slam record to 17 championships and is 74-4 for the year. Earlier, second-ranked Victoria Azarenka overcame an erratic performance to beat an ailing Sara Errani 7-6 (4), 6-2 in the opening match of tournament. "I was a little rusty at the beginning. I think its a little bit expected after a break, and playing right away against a top player always makes it a little bit difficult," Azarenka said. Williams, making her eighth appearance in the event, is looking to become the first player to successfully defend the title since Justine Henin in 2007. If she achieves the feat, she would equal Chris Evert for third most WTA Championships with her fourth. Henin was also the last to win 10 titles in a season, in 2007. Williams has clinched the year-end No. 1 ranking for the third time in her career after 2002 and 2009. Errani hurt her right calf in the third game of the second set and took a medical timeout to have it treated. Several times after that she seemed to be bothered by the injury and to favour her right leg, although she returned after the medical timeout to break Azarenkas serve to level at 2-2. She did not win another game though. "In the tiebreaker I felt a pain in my calf on serve," Errani said. "The first set was very tough, very long. I was running a lot." Errani served for the set three times -- and dropped serve each time as both players produced sloppy play with little rhythm. Azarenka, the Australian Open champion, managed to hold her serve only once through the first eight games but seized her chance when it came. She won four straight points in the tiebreaker to take a 5-3 lead, then faltered when she served her sixth double-fault. But an error by Errani gave Azarenka two set points. Errani then committed a double-fault and Azarenka had the set. "I think, overall was important to take that first set. It was a big turnaround point," Azarenka said. Azerenka, who was runner-up in the event in 2011 and a semifinalist last year, finished with eight double-faults but she also had 51 winners for Erranis 28. Azarenkas win was her first since losing the U.S. Open final to Serena Williams. Azarenka lost both of her opening matches in Tokyo and Beijing, where she had 15 double-faults. The tournament brings together the top eight players in the world. Third-ranked Maria Sharapova dropped out with a shoulder injury. The players are split onto two round-robin groups, with the top two finishers from each pool advancing to the semifinals. Fake Air Max 270 . The Suns termed Fridays surgery by team doctor Thomas Carter a success. No timetable was given for Bledsoes return but the team said in a news release that he "will pursue a possible return to action during the second half" of the season. Cheap Fake Air Max 97 . "Im not doing enough to help them," Durant told The Oklahoman on Monday of his 28-9 team. "Im shooting too much. Im shooting too many threes. Im not helping them out at all. http://www.fakejordancheap.com/wholesale-air-force-1-china.html . The biggest shock of this seasons competition was on when Watford took a 2-0 lead after 30 minutes at Etihad Stadium, only for a remarkable Aguero-led comeback by City in the final half-hour. The Argentina striker produced clinical finishes in the 60th and 79th minutes to level the score before Aleksandar Kolarov put City in front in the 87th. MONTREAL -- Rachel Homan started defence of her Scotties Tournament of Hearts title in style. Homan and her Team Canada (1-0) rink from Ottawa scored four in the eighth end for an 8-3 victory over Manitobas Chelsea Carey (0-1) on Saturday night at the Maurice Richard Arena. "The team played really well in front of me," said Homan, the winner last year in Kingston, Ont. "It was a tough battle. It was 4-3 and then one big end kind of ended it. My team just really had it today." It was a nervy but successful start for Val Sweetings Alberta rink. The Sweeting team (2-0) with lead Rachel Pidherny, second Dana Ferguson and third Joanne Courtney scored three points in the ninth end for a comeback 7-5 victory over 20-year-old newcomer Sarah Koltun (0-1) of the Yukon and Northwest Territories in the opening draw. In the evening, Sweeting took the early lead, wasted it, and then scored two in an extra end for an 8-6 win over 22-year-old Kesa van Osch of British Columbia (1-1). Heather Strong (2-0) of Newfoundland used the shot of the day to edge the home team, Quebecs Allison Ross (0-2), 5-4 with a raised angle takeout on the final shot. Stefanie Lawton (1-0) of Saskatchewan downed Allison Flaxeys Ontario rink (0-1) 8-6. Koltun looked ready for an upset when she stole a point for a 4-1 lead in the fifth end to throw a scare into 26-year-old Sweeting, a youngster herself in only her second Scotties. "They were outplaying us for sure," said Sweeting. "We set up some good ends and she made some good draws to save them, but we stayed patient and had an opportunity in the ninth and took advantage. "Im happy to get out of that one with a win, but we definitely have to sharpen up. We knew we couldnt take them lightly. Its their first time here and they have nothing to lose." A miss by Koltun with her first stone in the ninth set up the decisive steal by Alberta. Sweetings rink kept the house clear in the 10th and left no chance for the Whitehorse skip to force an extra end. Koltun is the youngest skip ever to play in the Scotties and is the first to skip at the Canadian junior and Scotties championships in the same year. She went 5-4 at the juniors two weeks ago in Liverpool, N.S. with two of her three teammates at the Scotties. She skipped a record seven times at national junior championships and is considered among the risingg talents in the sport. Cheap Air Force 1 Outlet. . But she may have let one get away in her debut. "We were in control at the beginning and it was just that one bad end, but its our first game at our first Scotties so well take what we can from it," said Koltun. "We are happy to be here, but we want to contend and be competitive and I think we showed that in this first game by putting up a really strong fight." Quebecs Allison Ross had a disappointing start as she failed to score until she picked up one point in the eighth end. After scoring, Ross conceded a 6-1 victory to New Brunswicks Andrea Crawford. The Quebec side from Montreal curled only 64 per cent as a group, lowest of the day. She found her draw weight in her evening match against Strong, which had the crowd of 1,825 roaring, but fell short when the Newfoundland skip pulled off her winning takeout. "I was reading the ice better," said Ross. "Its a disappointing loss, but Heather made an amazing shot. You want to leave the other team a hard shot, and she made it." Strong had won the Hot Shots competition -- a pre-tournament skills exhibition -- on Saturday morning and it may have helped her against Quebec. "A lot of the (Hot Shots) are indicative of what you face in game, so I referred back to that a lot," she said. "I felt good when I threw it, but I was coming off missing the one right before it, so I was a little torn. "We were exhausted. It was late back home. There were the opening ceremonies, we were in the Hot Shots right through. It was a long day, so to pull off that second win was awesome." Strong had won her first match as she took a 6-2 lead after six ends, then had to hold off a charge from Nova Scotias Heather Smith (0-1) for an 8-5 victory. Van Osch needed an extra end to defeat Kim Dolans Prince Edward Island rink 7-4. The 22-year-old from Victoria admitted to feeling nervous in her debut match, but settled down as it went on against the veteran Dolan, who is in her 10th Scotties. Van Osch said she hasnt set any goals for the tournament. "Were a first-year team," she said. "It was a bonus just to make it to the Scotties this year. Were taking things as they come, game by game." There are three draws scheduled for Sunday, including Team Canada against both Ontario and Quebec. 23:04ET 01-02-14 ' ' '