Women's tennis has been graced by some extraordinary players, right from 24-time Grand Slam champion Margaret Court to the barrier-shattering Billie Jean King and Martina Navratilova to modern day legends like Serena Williams and Venus Williams.But the WTA tour has also had its fair share of players who never reached their full potential, for one reason or the other.For this list, we have picked only players who never managed to win a Grand Slam. Seeing as only a handful of tennis players have achieved something as prestigious as winning a Major, it would be rather unfair to refer to anyone who won even one Slam as a player who failed to fulfill their potential.Without further ado, here are five women's players whom we think didn't achieve as much success as they initially promised:#5 Eugenie BouchardEugenie Bouchard burst onto the scene but never fulfilled her potentialEugenie Bouchard burst onto the scene in 2012, winning the Wimbledon girls' singles title. She won the WTA Newcomer of the Year Award the very next year and reached a career-high ranking of World No. 5 a year later in 2014.The 2014 season marked the highest point in the Canadian's career, reaching the semifinals at the Australian Open and the French Open. She then went on to reach the final at Wimbledon (the first Canadian to do so), followed by a fourth-round finish at the US Open. She also won her first, and only, WTA title that year at the Nurnberger Versicherungscup.Wimbledon@WimbledonEugenie Bouchard - a beaten finalist in 2014 - falls at the first hurdle to world No.117 Duan Ying-Ying 7-6, 6-4 http://t.co/iNqY4y7jOA9:55 PM · Jun 30, 2015239348Eugenie Bouchard - a beaten finalist in 2014 - falls at the first hurdle to world No.117 Duan Ying-Ying 7-6, 6-4 http://t.co/iNqY4y7jOAStarting in 2015, Bouchard went on a steady decline as a result of some unfortunate injuries and a dire run of form. Since the 2015 Australian Open, the former World No. 5 has reached the fourth round only once in a Grand Slam and lost in the first round on eight occasions.The Canadian reached seven other WTA singles finals, losing every single one of them. While she is still active (but recovering from a shoulder injury), her ranking has tanked to a catastrophic 1,252.#4 Dominka CibulkovaDominika Cibulkova rose to as high as World No. 4 but reached only one Slam finalDominika Cibulkova reached a career-high WTA ranking of World No. 4 but a Grand Slam title proved elusive. The Slovak came very close at the 2014 Australian Open, but lost in the final to Li Na.Cibulkova has managed to reach the quarterfinals of all four Majors. But she progressed beyond that stage only once in addition to the aforementioned Melbourne Park run (semifinals at the 2009 French Open).WTA Insider@WTA_insiderNo.1 Ashleigh Barty becomes the 5th player to win @WTAFinals on her tournament debut.Serena Williams (2001)Maria Sharapova (2004)Petra Kvitova (2011)Dominika Cibulkova (2016)Ashleigh Barty (2019)6:50 PM · Nov 3, 201956690No.1 Ashleigh Barty becomes the 5th player to win @WTAFinals on her tournament debut.Serena Williams (2001)Maria Sharapova (2004)Petra Kvitova (2011)Dominika Cibulkova (2016)Ashleigh Barty (2019) https://t.co/ntMtg5UJDaDespite that disappointing run, the 32-year-old won the Year-end Championships in remarkable fashion on her tournament debut after losing two matches in the round robin stage. It was her biggest win on the WTA tour in a career boasting eight singles titles overall. The Slovak finally retired from competitive tennis in 2019, after her ranking had plummeted all the way down to World No. 315.#3 Vera ZvonarevaVera Zvonareva became the No. 2-ranked women's tennis player in 2010 but reached only two Slam finalsVera Zvonareva reached a career-high WTA ranking of World No. 2, but could never get her hands on a Grand Slam. The closest she came was in 2010, when she reached the final at the Wimbledon Championships and US Open.The Russian reached the semifinals at the Australian Open the following year, followed by a quarter-final run at Flushing Meadows. But then, injuries took hold of her and never let go.Jason@HurleytennisVera Zvonareva and Kaia Kanepi will face off in the $25K Istanbul final. A rematch of the 2010 US Open quarterfinals! I am old02:18 AM · Oct 31, 2020793Vera Zvonareva and Kaia Kanepi will face off in the $25K Istanbul final. A rematch of the 2010 US Open quarterfinals! I am oldInjuries kept Zvonareva out of the game for long periods, including a near-three-year hiatus between 2015 and 2018. Of the 18 Grand Slams the 37-year-old has appeared in since 2012, she has never gone past the third round.Vera Zvonareva has been much better in doubles, winning three Majors and 11 titles in total. In singles, she has won 12 titles on the WTA tour. The former World No. 2 is still active to this day, and is ranked World No. 114.#2 Jelena JankovicJelena Jankovic became World No. 1 in women's tennis without ever winning a Grand SlamJelena Jankovic became the top-ranked women's tennis player in 2008, on the back of semi-final appearances at the Australian Open and French Open. The Serb looked poised to win her maiden Slam at Flushing Meadows the same year but lost in the final hurdle to Serena Williams.Billie Jean King Cup@BJKCup Former world No. 1 2008 US Open finalist 15 career singles titles Happy Birthday, Jelena Jankovic! 🥳00:09 AM · Mar 1, 202217615🎾 Former world No. 1🎾 2008 US Open finalist🎾 15 career singles titles Happy Birthday, Jelena Jankovic! 🥳 https://t.co/XGiv90SGGaJankovic only managed a semifinal and quarter-final appearance in the next 40 Majors, never reaching the heights she promised due to continued struggles with form and injury.Overall, the 37-year-old won 15 titles on the WTA tour, including six WTA 1000 tournaments, and stayed at the top for a period of 18 weeks. The Serb did win a Grand Slam in mixed doubles at the 2007 Wimbledon Championships and eventually retired from professional tennis in 2017.#1 Dinara SafinaDinara Safina became the highest-ranked women's tennis player without winning a SlamDinara Safina rose to World No. 1 in 2009 without winning a Grand Slam. She never got her hands on tennis' ultimate prize before her eventual retirement in 2014. The Russian came close multiple times, reaching three Major finals and two semifinals -- in 2008 and 2009.Other than this two-year stretch, Safina only reached two Grand Slam quarterfinals but won the Olympic silver medal in 2008. In doubles, however, she managed to win a Slam at the 2007 US Open.Mike McIntyre@McIntyreTennisTen years ago at the @rogerscup Russia's Dinara Safina was the No. 1 seed. As defending champ she fell in her first match but was having quite the year in 2009 making the finals of the Aussie Open and Roland Garros as well as the SF at Wimbledon.8:10 PM · Jul 19, 2019104Ten years ago at the @rogerscup Russia's Dinara Safina was the No. 1 seed. As defending champ she fell in her first match but was having quite the year in 2009 making the finals of the Aussie Open and Roland Garros as well as the SF at Wimbledon. https://t.co/osjH7gtdLhA persistent back injury robbed the tennis world of Safina's full potential and forced her to announce a premature retirement. Overall, the 35-year-old managed to win 12 titles on the WTA tour and remained No. 1 for a period of 26 weeks.