Melbourne, Australia (SportsNetwork.com) - Serena Williams quest for an 18th career singles Grand Slam title will have to wait a few more months. The world No. 1 will have to start a new winning streak too. Serbian Ana Ivanovic stunned Williams, 4-6, 6-3, 6-3 Sunday to reach the quarterfinals of the Australian Open. The 14th-seeded Ivanovic ended Williams 25-match winning streak and dealt the American a shocking fourth-round exit. Ivanovic, who was the runner-up in Melbourne in 2008 and was the French Open champion later that year, took advantage of 31 unforced errors from Williams. "Its not easy playing such a champion and Ive never beaten her before," Ivanovic said during an on-court postmatch interview. Before this match, Ivanovic had lost all four previous matchups against Williams. In fact, she hadnt taken a set against her, but that all changed at Rod Laver Arena. A five-time Australian Open champion, Williams lost for just the second time in 53 matches at the event when winning the first set. Her only previous defeat came last year in the quarterfinals to Sloane Stephens. Williams fought back from a break down to win the first set, but in the second Ivanovic broke for a 3-2 edge. She finally finished off the set on her third chance, a forehand winner. "I had some confidence coming into todays match," Ivanovic said. "I really did certain things extremely well, you know, and I kept her under pressure I felt throughout the whole match." The errors then started to pile up for Williams, as she lost the first three games of the final set. Williams held serve to get within 5-3 and saved one match point when Ivanovic sent a forehand into the net. The encounter finally ended when Williams sent a return long. "I wasnt the best, but it was all Anas day. I thought she played really well," said Williams, who fired 13 aces. "I made a tremendous amount of errors. Im just not used to missing those shots." Williams has been dealing with a back injury, which she termed as not "life threatening" but said she was unable to get additional days off due to the schedule of playing essentially every other day as a Grand Slam tournament requires. She even contemplated not taking the court Sunday due to the injury, but gave Ivanovic all the credit for winning. "I think its almost good I lost today because now I know what I have to work on," added Williams, who pulled out of the doubles competition with her sister, Venus before their first-round match. That was because Venus had a lower left leg injury. Ivanovic will face either 30th seeded Canadian Eugenie Bouchard or Australian Casey Dellacqua in the quarterfinals. Only three players have won 18 Grand Slam singles titles in the Open Era - Chris Evert (18), Martina Navratilova (18) and Steffi Graf (22). Serenas next chance at No. 18 will come at the French Open at the end of May. Fourth seed Li Na of China bested 22nd-seeded Russian Ekaterina Makarova, 6-2, 6-0 in 59 minutes. Li, who lost to Victoria Azarenka in last years finale in Melbourne, will face Italian Flavia Pennetta in the quarterfinals. The 28th-seeded Pennetta, who did not play the 2013 Australian Open due to a wrist injury. upended No. 9 seed Angelique Kerber of Germany, 6-1, 4-6, 7-5. This is Pennettas first quarterfinal appearance at the Aussie Open, but her second straight such showing in a Grand Slam tournament. Pennetta, who fired eight aces, was ousted by Azarenka at the 2013 US Open semifinals. Since 1999, only one German player has advanced to the Australian Open quarterfinals. That was Andrea Petkovic in 2011. Jason Sanders Dolphins Jersey . Hernandez (3-0) struck out 11 and shut down Oakland for the second time in a week, becoming the first Mariners pitcher to win three times in the first nine games of a season. With the usual "Kings Court" for Hernandez home starts expanded to a "Supreme Court" encompassing the entire stadium with yellow shirts and "K" cards, Hernandez gave up four hits in the 28th double-digit strikeout game of his career. Jason Sanders Jersey .J. Ellis hit an RBI single in the ninth inning, Hanley Ramirez hit a tape-measure, three-run homer in the first against Cliff Lee and the Los Angeles Dodgers beat the Philadelphia Phillies 4-3 on Saturday night. http://www.officialauthenticdolphinsshop.com/authentic-frank-gore-jersey.html . As each game passes (each has played close with the exception of last night) it becomes clearer just how evenly matched these two teams are and how one mistake, or one bad inning, is likely to sway the result. Josh Sitton Jersey . According to a report from CSN Bay Area, the 49ers are bracing for 6-8 game suspension for their outside linebacker. Kalen Ballage Jersey . The Brad Jacobs team from Sault Ste. Marie, Ont., advanced to Fridays championship game with a 10-6 win over Chinas Rui Liu in the semifinal.KANSAS CITY, Mo. - In the hours after a four-sack performance gave Justin Houston the Chiefs franchise record, all he could talk about was how close Kansas City came to making the playoffs.Houston insisted his new single-season mark would hit him some day. He might be on a new team by the time it happens.The Pro Bowl linebacker became a free agent when the season ended, putting the Chiefs in a difficult situation. Their attempts at striking a long-term deal last off-season when nowhere, and Houstons 22-sack season has given him even more leverage in negotiations.Its the part of the business side that I dont want to talk about, Chiefs general manager John Dorsey said Monday. I can say its ongoing business, ongoing conversation.If the Chiefs slap Houston with the franchise tag in March, they would have until July 15 to agree on a multiyear contract, so there is plenty of time to work out a multiyear contract. But if no deal is reached, the Chiefs would have to pay Houston a one-year deal averaging the top five salaries at his position.That temporary solution comes with its own problems.For one thing, the Chiefs would still be left negotiating with Houstons representatives on a long-term deal. But the more immediate issue is exactly how Houston is classified. He has always been listed as a linebacker, but he often lines up as a defensive end. And for the purposes of the franchise tag, defensive ends tend to get paid more than linebackers.Not surprisingly, the notoriously media-shy Houston refused to discuss his pending free agency after Sundays 19-7 victory over San Diego. He merely said, I havent even thought about that.Im still heartbroken about not going to the playoffs, Houston said. Thats what I base my goals on. The individual records, itll mean something when Im done playing.The records are piling up in a hurry.Houston finished just a half-sack behind Michael Strahans record for a single season set in 2001. The only other players with 22 sacks in a season were Mark Gastineau with the Jets in 1984 and Jared Allen, who once played in Kansas City, with the Vikings in 2011.His sack total edged Texans start J.J. Watt for the league lead, which means Houston will be the second recipient of thee Deacon Jones Award.ddddddddddddThe Colts Robert Mathis won it last year.Its something special to watch, Chiefs defensive back Ron Parker said. Watching how they game-plan for him and Tamba (Hali) all year round, its just crazy how they try to double-team him and chip him, and they still get off every weekend.Chiefs defensive tackle Kevin Vickerson even alluded to the Hall of Fame when describing Houston, even though hes only played four seasons in the league.I told him, Thats greatness, Vickerson said. He talks about it all the time, how he wants to put his name on that board. He wants to put on one of those yellow jackets at the end of his career. He has the right mindset. I couldnt be happier for him.Houston already has 48 1/2 sacks in his career, three shy of passing Mike Bell for fifth in franchise history. His two-season total of 33 is a half-sack behind the best two-year stretch of Thomas Hall of Fame career, and his 13 multi-sack games rank fourth in franchise history.Now, the big question is whether hell be able to climb any of those charts.The Chiefs have plenty of holes to fill this off-season, and that could have a major impact on Houstons future. Running mate Hali has a massive salary cap figure for next season and could be released if his deal isnt restructured. Wide receiver Dwayne Bowe has failed to live up to his massive contract and could be released. Both of those scenarios could free up money for Houston.Then theres the fate of Eric Berry, the safety who is battling cancer. Berry also carries a large contract into next season and its unlikely hell be able to play.That part will come eventually. What Im worried about is Eric. I care about his person, his health, his well-being, Dorsey said. Thats what Im focused on as we move forward here.NOTES: Reid said he expects LB Derrick Johnson and DE Mike DeVito to participate in some part of the off-season program. Both tore an Achilles tendon in Week 1. ... C Rodney Hudson will hit free agency but said he wants to return to Kansas City. No question, he said. ... QB Alex Smith (lacerated spleen) said he feels fine and will not miss any off-season work.___AP NFL website: www.pro32.ap.org and www.twitter.com/AP_NFLCheap Jerseys ChinaNFL Jerseys ChinaNFL Jerseys WholesaleDiscount Basketball JerseysCheap NHL Jerseys AuthenticCheap Baseball Jerseys Free ShippingCheapest College Jerseys SaleCheap Football Jerseys ChinaNike NFL Jerseys CanadaWholesale NHL Jerseys From ChinaMLB Jerseys Outlet CanadaWholesale NBA Jerseys Canada StoreCheap Soccer Jerseys ChinaCheap Authentic Jerseys Canada ' ' '