ROTTERDAM, Netherlands -- Top seeds Juan Martin del Potro and Andy Murray overcame bumps to reach the ABN Amro quarterfinals on Thursday. Del Potro, the 2012 runner-up and 2013 champion, beat Paul-Henri Mathieu of France 6-2, 7-6 (2) but had to save two set-points on serve at 5-6 in the second. "I recovered myself well in the tiebreak, because I made too many mistakes in the second set," he said. Still feeling pain in his left wrist, he added, "Sometimes I get frustrated . its not easy when I want to close the point and hit hard but I have to hit slices. But I have done this for the past month on the tour and I have to deal with it. If the pain goes away I will start to hit the backhand harder again." Second-seeded Murray bested Austrian qualifier Dominic Thiem 6-4, 3-6, 6-3. They were evenly matched in the first two sets, with Thiem saving three break points to take the second. But Murray asserted himself in the third, in an exciting match which lasted 2 hours, 21 minutes. "It was unbelievably tough with a lot of long games," Murray said. "Maybe fun for the fans, but not (for me) to play against a talent like Dominic Thiem. Well be hearing a lot from him." Murray faces Marin Cilic in the quarterfinals after Cilic upset fifth-seed Jo-Wilfried Tsonga 6-4, 6-4. Del Potro plays Latvian Ernests Gulbis, who beat eighth-seed Grigor Dimitrov of Bulgaria 6-4, 7-6 (3). Also, third-seeded Tomas Berdych beat Nicolas Mahut of France 6-4, 6-3 and will meet Wimbledon semifinalist Jerzy Janowicz on Friday. But fourth-seeded Richard Gasquet was knocked out by Philipp Kohlschreiber 7-5, 7-5, and the German will face Dutch wild card Igor Sijsling in the last eight. Royce Freeman Jersey . In the days leading up to the draft, TSN.ca and TSN Radio basketball analyst Duane Watson looks at some of the names that will be headlining the event. Tonight, Michigans Nik Stauskas of Mississauga, Ontario. Courtland Sutton Jersey .J. - Trying to learn and absorb the new West Coast offence being installed by new offensive co-ordinator Ben McAdoo, the New York Giants wrapped their final organized team activity Thursday before a three-day mini-camp next week. - Trying to learn and absorb the new West Coast offence being installed by new offensive co-ordinator Ben McAdoo, the New York Giants wrapped their final organized team activity Thursday before a three-day mini-camp next week. DaeSean Hamilton Jersey . It certainly isnt a coincidence that Dwight Howard has scored at least 20 points in each game of the winning streak. Custom Denver Broncos Jerseys . -- Canadian ski cross star Marielle Thompson accomplished two goals in one race Saturday.ISTANBUL, Turkey -- Even when she hits a wall, Serena Williams cant be stopped. An exhausted Williams managed to hang on to beat Jelena Jankovic 6-4, 2-6, 6-4 on Saturday and will play Li Na in the final of the WTA Championships. Li Na advanced to her first WTA Championships final by sweeping past 2011 winner Petra Kvitova 6-4, 6-2, setting up a showdown between the two oldest players in the tournament. Williams was in obvious discomfort throughout the match, moving poorly on court, walking slowly and holding her face in a towel during changeovers. "Last night I was in my hotel and I was lying down, and I just hit a wall. I literally felt like I just hit a wall," Williams said. "I was so tired just even standing. I think I played a lot of tennis this year, so I dont know. After a while I just felt like a big rush of air just come out of me, and I really had to pull myself through that match. I dont know how I did it." Jankovic, who said she was battling a cold herself, was unable to take advantage of Williams weakness and the American is one win from her fourth WTA Championship and 11th title of the year. Williams has won 77 of 81 matches this year. Jankovic wasnt convinced Williams tiredness was genuine. "For some reason, every time she starts losing, she starts serving slower or not running for certain balls. Thats something that, you know, as a player you have to pay attention to. Its not the first time when we played that shes doing this," Jankovic said. "But, when its an important moment, a huge serve comes up, so you have to be on alert every time. You never know if shes going to come slow or a really fast one. "Shes the No. 1 player in the world, and she plays so well. Shes by far the best player. "But I think, winning or losing, you have to be up there and be a good sportsman." Jankovic also pointed out that Williams had won all of her previous matches in straight sets -- and Jankovic had spent a total of five hours, 41 minutes on court, more than two hours more than Williams. Williams also had Friday off, while Jankovic plaayed.dddddddddddd Williams wasted a match point and failed to serve out the match at 5-2 and Jankovic won two straight games. Williams squandered two more match points before finally closing it out with a smash. "In the third set, it was 5-1 for her, and I was one point away to level it to 5-all, and she hit that ace which was such a great angle, and unfortunately I lost 6-4 in the third," said the seventh-seeded Jankovic, who is back in the top 10 after three years. While hitting 40 winners, Williams had the identical number of unforced errors. Jankovic had 22 winners -- and 22 unforced errors. By reaching the final, Li made sure of rising to a career-high No. 3 ranking, a jump of two places and the highest ranking for an Asian woman. Li said she started the year with the goal of making it into the top three. "I catch my goal, lucky or happy in the last tournament I make it, so pretty good ending for 2013," the Chinese said. Like Williams, Li is unbeaten in four matches, after failing to advance from the group stage in the previous two years. But she is 1-9 against Williams in previous matches. Williams, 32, and Li, 31, are the two oldest players in the elite, eight-woman tournament, while the fifth-seeded Kvitova is the youngest at 23. "Right now Im on E (empty)," Li said. "Im going to try to put some gas in the tank tonight, go to the gas station and fill up and try. And I think I will be ready. I have to be. I have no choice. "Im really proud that I was even able to stay out there today. And, you know, tomorrow is the final, so everyone gets pumped up. "Were both in our 30s and both playing the best tennis of our career. Were still getting better." Making her eighth appearance in the event, Williams is looking to become the first player to successfully defend the title since Justine Henin in 2007. Henin was also the last to win 10 titles in a season, in 2007. And she is the first woman player to make $10 million in a single season; as a runner-up she will have collected $11.3 million, as champion, $12.3 million. 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