Jelena Ostapenko shocked the tennis world at Roland Garros in 2017 when she claimed her first Grand Slam title. During the rest of the 2017 season, Ostapenko showed that her Roland Garros run was no fluke. When the Latvian’s powerful game is on, she can beat anyone. Ostapenko’s groundstrokes are up there with the best, her movement is also very good. Inconsistency and a questionable serve are her obvious weaknesses. Once Ostapenko clears up some issues with her serve and adds a bit more margin to her game, there is no reason why she can't feature consistently in the top 5 for the foreseeable future.
Goerges has always been known for inconsistency. Goerges has the game to trouble most players on her day, however she also has the ability to lose to most players on a bad day. In late 2017 the German showed that she has the ability to play consistent quality tennis as she won two big titles in a row in Moscow and Zhuhai. The problem for Goerges is that her game will always be very hit or miss, she also lacks versatility.
At her best, CoCo Vandeweghe is one of the best players on tour. A huge serve and forehand combination and a good game at the net are the hallmarks of the American's game. However, the volatile American struggles with inconsistency and adaptability. Vandeweghe has shown her ability to perform on the big stage with two semi-final appearances at the Grand Slam level in 2017. With Pat Cash by her side, if Vandeweghe gets things together in 2018, she could go one step further.
Barty is a player on the rise. A very effective first and second serve are the hallmark of her game. Solid groundstrokes, variety from the baseline and a good ability at the net make the Aussie a very complete player with great potential.