DOHA: Caroline Wozniacki crushed Elena Dementieva 6-1, 6-1 at the WTA Championships Tuesday to serve up a timely reminder to critics of her world number one ranking. Wozniacki blasted away from the baseline while Russian Dementieva could offer little in return, the Dane wrapping up the Maroon Group opener in 53 minutes at the Khalifa Tennis Complex. In the White Group, world number two Vera Zvonareva powered past a lethargic Jelena Jankovic 6-3, 6-0 to keep alive her slender hopes of grabbing the year-end number one spot from Wozniacki. In the day's last match, Australian Sam Stosur beat Francesca Schiavone to gain a measure of revenge for her defeat in the French Open final in June. Italy's Schiavone had raced to a 4-0 lead in the first set but Stosur battled back to win 6-4, 6-4. Isner and Dent thru In France, fifth-seeded John Isner of the United States eased into the second round of the Open Sud de France with a 7-5, 6-2 win over French wild card Benoit Paire Tuesday. Isner served 10 aces and broke his opponent three times to wrap up the match in just 67 minutes. The 2.09-meter (6-foot-9) Isner will next face another Frenchman, qualifier Adrian Mannarino, who needed eight match points to beat Slovakian Lukas Lacko 6-3, 6-7 (4), 6-4. American Taylor Dent rallied from one set down to beat Romain Jouan of France 6-7 (5), 6-3, 6-4. Dent will play fourth-seeded Ivan Ljubicic of Croatia in the second round. Eight-seeded David Nalbandian converted only four of his 13 break chances but it was enough to beat Spaniard Marcel Granollers 6-4, 6-4. German qualifier Mischa Zverev also advanced with a 7-6 (7), 7-6 (5) win over Dutchman Robin Haase, while Belgian Steve Darcis defeated Eduardo Schwank from Argentina 6-2, 7-5. Zverev will next square off against top seed Nikolay Davydenko of Russia. Muster beaten on comeback In Vienna, former No. 1 Thomas Muster lost his first match back on the ATP Tour after 11 years away Tuesday, but afterwards insisted he still plans to press ahead with a comeback next season. The 43-year-old Muster, was beaten 6-2, 7-6 (5) by fellow Austrian Andreas Haider-Maurer. The result means that Jimmy Connors remains the oldest player to win a match on the ATP Tour by reaching the quarterfinals in Halle, Germany, in 1995 at age 42. Earlier Tuesday, Germany's Michael Berrer upset sixth-seeded Guillermo Garcia-Lopez 6-3, 4-6, 7-5. Berrer next plays Pablo Cuevas of Uruguay, who defeated Thiemo de Bakker of the Netherlands 7-6 (6), 1-6, 6-4. Lukasz Kubot of Poland broke his seven-match losing streak by beating James Blake of the United States 6-4, 6-4 and set up a second-round match against top-seeded defending champion Jurgen Melzer. Eighth-seeded Juan Ignacio Chela of Argentina beat Slovakia's Andrej Martin 6-3, 6-3, while Tobias Kamke defeated fellow German Matthias Bachinger 6-4, 6-4. Also, Santiago Geraldo of Colombia defeated Belgium's Xavier Malisse 6-4, 1-6, 6-1 and Grega Zemlja of Slovenia rallied to beat Marsel Ilhan of Turkey 4-6, 6-1, 7
