#2 Aryna Sabalenka
Aryna Sabalenka began 2018 reaching two quarterfinals at the Shenzhen Open, China and the Hobart International. At the Premier Level, she won her first match at the Indian Wells Open. She began her clay court season with a strong performance making the final at the Ladies' Open Lugano.
Her success here resulted in her making the WTA Top-50 for the first time in her career. At the Eastbourne International, she played five consecutive three set matches winning all five notching up victories over higher ranked players like Julia Goerges, Elise Mertens, Karolina Pliskova and Agnieszka Radwanska. At the Canadian Open, she notched up the biggest win of her career beating World #2 Caroline Wozniacki. She made the final of the Cincinnati Open.
Her biggest tournament win came at the Connecticut Open where she beat 9th seed Julia Goerges and Carla Suarez Navarro in the semis and finals respectively. At the US Open, she upset 2-time Grand Slam Champion Petra Kvitova and lost a tough 3-setter against eventual winner Naomi Osaka.
She was the only player to have taken a set off Naomi Osaka throughout the duration of the tournament. Her second biggest tournament came at the Wuhan Open where she beat avenged her Australian Open loss to Ashleigh Barty and also managed to beat 5th seed Elina Svitolina.
Sabalenka qualified for the WTA Elite Trophy after having risen to a World Ranking of Number 11. She made the semis of the tournament and was named 'WTA Newcomer of the Year'.
Sabalenka notched up eight victories over the Top-10 players in 2018 and will surely be a force to reckon with across all surfaces in the upcoming 2019 season.