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. Jamal Murray Nuggets Jersey . 11 Ana Ivanovic and American Sloane Stephens, and former world No. Denver Nuggets Jerseys . Or take a relaxing vacation somewhere warm. 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Marie, Ont., advanced to Fridays championship game with a 10-6 win over Chinas Rui Liu in the semifinal.After three days off — including two rained out games and one travel day — the Winnipeg Goldeyes seemed out of their groove on Tuesday night, as they lost to the Can-Am Leagues New Jersey Jackals.The Goldeyes (18-11) began their eastern road trip losing 4-1 to the Jackals (13-9) at Yogi Berra Stadium in Little Falls, New Jersey.This was the first time the Goldeyes have played at Yogi Berra Stadium since the 2002 Northern League Championship Series. The Jackals beat the Goldeyes in the final two games of that series in Little Falls to claim their second straight league championship.The Jackals took the lead early on Tuesday night, with two solo home runs in the first inning to get ahead two runs.They added another run on a sac fly in the bottom of the fourth, and tacked on their fourth run in the bottom of the fifth.Jackals pitcher Gabriel Perez kept the Goldeyes bats quiet. He went strong for seven innings, facing only 22 batters, striking out five and giving up only one hit to the Fish.“He kept us off balance for the most part,” said Goldeyes Pitching Coach Jamie Vermilyea of Perez on the Jewel 101 Post-Game Show. “He pitched a good game.”Despite beinng on the hook for all four of the Jackals runs, and the loss, Goldeyes pitcher Chris Salamida was able to retire the last seven batters he faced.dddddddddddd He also recorded six strikeouts, and only gave up one walk over his seven innings of work.“He also pitched well,” said Vermilyea. “He made a few mistakes there in the first inning, but he also got out of a few jams, and gave us a chance to win.”The Goldeyes only run came in top of the ninth. Casey Haerther reached on a single and then was driven in on a Jake Blackwood RBI double.“Its good to end on somewhat of a positive note. Hopefully we can keep the batting momentum going into the game tomorrow,” Vermilyea said.With the loss the Goldeyes move a game and a half back of the St. Paul Saints for second in the American Association North Division.The Goldeyes continue their series against the Jackals tomorrow and Thursday with both games going at 6 p.m. Tomorrow the Goldeyes will send Nick Hernandez (2-0) to the mound to face New Jerseys Keith Bilodeau (0-1). The Fish then travel to Quebec to take on the Quebec Capitales in a three-game series that goes Friday, Saturday and Sunday. ' ' 'ww.pro32.ap.org and www.twitter.com/AP_NFL ' ' '