Urszula Radwanska: Will She Join Big Sister Agnieszka in the WTA Top 20 in 2013?

Another player with the last name Radwanska is making big gains on the WTA Tour.

It's just taken her a little longer to do so.

Twenty-one-year-old Urszula Radwanska, a professional since 2005, has finally cracked the top 40 of the women's rankings. That's a far cry from the pace set by her slightly older sister Agnieszka, who currently sits at No. 3 in the world, having reached a high of No. 2 in 2012.

Urszula, like her sister, was a highly accomplished junior player. She won the junior title at Wimbledon in 2007 and three Grand Slam doubles titles that same year at that level. Big things were expected for her upon turning pro, but it took her a few years to make her debut in the top 100.

Shortly after that, injuries hit—and hit hard.

Radwanska missed most of 2010 with a back injury, which sent her ranking plummeting. In '11, though, she started to regain some momentum, but the year was still filled with some setbacks, including falling in qualifying rounds of tournaments a number of times.

This year has been a far different story so far. Over the course of the past few months, Radwanska has been one of the most consistent players on the WTA Tour. The run started in earnest during the grass-court season, when she won her first ITF title in two years in Nottingham, England, defeating CoCo Vandeweghe in the finals.

A couple of weeks later, she made her first career WTA Tour singles final, falling to Nadia Petrova in the finals of the Wimbledon warmup in 'S-Hertogenbosch, the Netherlands.

Over the summer hard-court swing, Radwanska made two quarterfinals, and post-U.S. Open, has made back-to-back semifinals, having just fallen at that stage at this week's tournament in Guangzhou, China.

There's still plenty of tennis left in 2012 and at this rate, Radwanska can find herself knocking on the doors of the top 20.

By 2013, she should be ready to join Agnieszka Radwanska there.

It's just taken Urszula a little longer to do so.