Agnieszka Radwanska ascended to a career-high No.5 on the heels of her victory at last week's Dubai Duty Free Tennis Championships.

It was a long time coming for Radwanska, who after making her Top 100 debut in September 2006, took just over four months to crack the Top 50. Then she entered the Top 20 just over a year later. Less than five months later, she became the first Pole to break into the Top 10. But from there her momentum slowed, as she remained just outside or just inside the Top 10 for several years.

However, a scintillating finish to 2011 that saw Radwanska win three titles from August on left her tied for her then career-high of No.8 at the end of the season. She rose two more spots after her quarterfinal showing at January's Australian Open and then one more after her superb week in Dubai.

Radwanska's victim in the Dubai final, Julia Goerges, climbed three spots to No.16 to match her career-high. Marina Erakovic established a career-high of No.46 after her runner-up showing in Memphis.

Timea Babos had the biggest rise within the Top 100 in going from No.107 to No.68 following her first career title in Monterrey. It was the best Top 100 debut since Carla Suárez Navarro cracked the Top 100 at No.49 in June 2008. On top of that, the 18-year-old Hungarian became the youngest player in the Top 100 - a title previously held by Sloane Stephens. Babos' victim in the Monterrey final, Romania's Alexandra Cadantu, also made a big move in going from No.110 to a career-high No.82. Finally, American Jamie Hampton climbed five spots to No.99 in making her Top 100 debut.