Sorana Cirstea
Currently, Sorana Cirstea is ranked at 37, but back in 2013 she made her way all the way up to 21. Making major appearances like at the quarterfinals of the French Open and the final of the Rogers Cup, has made her a player to watch. The Romanian player has served her quickest serve at 107 mph (172 km/h).
Laura Robson
Can you believe that it has almost been 10 years since young Laura Robson went pro? Yeah, neither can we. Do you remember when just at the age of 14 she won the Wimbledon Junior Girls’ Championship? Do you remember when she served her fastest serve of 113 mph (181 km/h)?