SINGAPORE - Serena Williams made the semifinals of the WTA Finals and earned the year-end No. 1 ranking without hitting a ball on Friday.Williams fortune was at the expense of Ana Ivanovic and Maria Sharapova. Ivanovic had a shot at reaching the semis, and Sharapova had a slimmer chance at the top ranking. Both won dramatic three-setters, but they needed to win in two, and were eliminated.By the end of the final day of group games, Saturdays semifinals were set: Williams will meet Caroline Wozniacki, and Simona Halep will take on Agnieszka Radwanska.Besides Sharapova and Ivanovic, Petra Kvitova also had her destiny in her own hands and failed to take the opportunity to progress.Sharapova needed to win in straight sets to advance, and had to win the title if she was to topple Williams from the top of the rankings.Sharapova inexplicably collapsed from a set and 5-1 up, missing three match points and losing the second set in a tiebreak to Radwanska. The Russian ultimately prevailed 7-5, 6-7 (4), 6-2 in over three hours but that was not enough, while Radwanska qualified for the semis despite a 1-2 group-stage record.Radwanska was helped by Wozniacki beating Kvitova 6-2, 6-3. Kvitova would have progressed had she won.Ivanovic had to beat Halep in straight sets to advance and knock out Williams. That looked unlikely when Halep came out to serve for the first set at 5-2, yet Ivanovic won four successive games and saved a set point in the tiebreak to win it 7-6 (7).Ivanovic showed further resilience when she broke to get back on serve at 4-3 in the second set yet Halep won the next two games to take the frame, making the final set only for pride and prizemoney. Ivanovic won 7-6 (7), 3-6, 6-3.Williams took the year-end top ranking for the fourth time, beside 2002, 2009 and 2013.Since the rankings began in 1975, only five players have held the No. 1 spot at year end four times or more. The others were Steffi Graf (eight times), Martina Navratilova (seven), Chris Evert (five) and Lindsay Davenport (four).Sharapova, the 2004 champion and two-time runner-up, was left to rue a collapse from a dominant position in the second set against Radwanska, who won five straight games. The Russian said she became too hasty as she tried to close out the match.A little impatient, her doing a good job of retrieving balls — that is her strength — and going for a little bit more than I should have, Sharapova said in explaining what went wrong in the second set.I know Im not moving forward but Im proud of that effort, and to finish the year in this way.Wozniacki was already assured of a semifinal berth when she stepped out against Kvitova, while the Czech had to win, yet it was the Danish player who was on top throughout, and finished the group stage as the only player with a perfect 3-0 record.Wozniacki has previously held the No. 1 ranking yet questions have always lingered about her true status as she has never won a Grand Slam tournament or WTA Finals. She has played this week like someone who wants to silence the doubters.I believe in myself and I believe in my skills, Wozniacki said. Ive been playing well, so I believed I could beat anyone.That level of belief may not be quite as high against Williams, with the American boasting a 9-1 head-to-head record, including victory in the U.S. Open final.My matchup against her so far hasnt been great, Wozniacki said. I won once and lost like 10 times, or nine, I dont know. I dont even count anymore.But its a new tournament. Its a new week. Ive been playing well really. Again, I believe that if I play like I did today, doesnt matter whos on the other side. I can win.Haleps defeat against Ivanovic takes only a small amount of the polish off her previous match when she dropped only two games against Williams. The Romanian next meets Radwanska, with the pair having split their two meetings this year, although Halep trails 4-2 overall.She runs a lot on court, and I have to run as well tomorrow, Halep said. I have to be aggressive, very aggressive, because shes an intelligent player, she knows how to open the angles. But I will try everything.Ivanovic finishes the year with the most wins of any player on tour at 58, with four titles.Its mixed emotions because I feel like it was such a great match tonight, yet its such a low not to be able to qualify for the semifinals, Ivanovic said. On a positive note I won two matches, finished the season with a victory. Its been an amazing year for me.Kvitova also exits, but the Wimbledon champion has only a short break. In two weeks she will lead the Czech Republic in the Fed Cup final against Germany. Noah Syndergaard Jersey .Cameron sustained his third concussion in three seasons last week on a hit by Oakland safety Brandion Ross, who was fined $22,050 by the NFL for the helmet-to-helmet blow. Wilmer Flores Jersey . This time, Tebow was in a groove the entire second half -- not just in the waning minutes -- and his teammates on defence were getting gobbled up. http://www.metsrookiestore.com/Mets-Mike-Piazza-Kids-Jersey/. Compared to what hes gone through in recent weeks, that seemed like a breeze. Speaking to The Associated Press on Friday at an NBA Cares event, Silver said hes thrilled that the leagues attention can be on the championship series between the Miami Heat and San Antonio Spurs -- and not, as it was for so much of the post-season, on the off-the-court matters involving the banishment of Los Angeles Clippers owner Donald Sterling and now the looming sale of that franchise. Travis dArnaud Jersey . Speaking on TSN Radio 1050s TSN Drive with Dave Naylor on Monday, Colangelo said he had no intention of tanking the shortened 2011-12 season, but definitely wanted a high pick in the draft. "I wish that word wasnt used for headline reasons," said Colangelo, "but the story behind it was: how can we fix the system? How can we tweak the system to make it less likely that teams are rewarded for losing records? "I do believe that if youre as transparent as we were at the time - with our season seat holders, our fans, the market place and the media - everybody knew what the plan was and what we were going through. Jose Reyes Jersey . -- Maxence Parrot of Bromont, Que.FLORHAM PARK, N.J. -- The New York Jets re-signed veteran guard Willie Colon to a one-year deal Wednesday. The 30-year-old Colon will return after starting at right guard in all 16 games last season. He is recovering from a torn right biceps suffered in the season finale, but expects to be healthy in time for training camp in late-July if not minicamp in June. "My rehab is going really well, things are going really well, and all thumbs are up," Colon said during a conference call. "So Im being smart about it, taking my time, rebuilding it and getting ready for training camp." Joe Linta, Colons agent, confirmed the deal is for $2 million. "Willie loves the Jets," Linta said in an email to The Associated Press. "He wanted to stay with them." Colon helped block for the Jets running game, which finished second in the AFC with 2,158 yards during the reggular season.dddddddddddd. Chris Ivory (833) and Bilal Powell (697) each set career highs in yards rushing. The Bronx, N.Y., native and former Hofstra University standout thanked the Jets on Twitter, saying hes glad to "be back home." Colon added that Atlanta and Minnesota showed initial interest when the NFLs free agency period began last week. "They kind of backed off the table," he said. "Everything else was sort of wish-wash, so to speak. There were rumours about other teams, but nothing was really solid on the table." The eight-year pro spent his first seven seasons with Pittsburgh and signed with the Jets as an unrestricted free agent last March. Joining Colon on the right side will be former Seattle Seahawks tackle Breno Giacomini, who signed with the Jets last week and will replace Austin Howard, who signed with Oakland. ' ' '