The world No 1 tennis player Ashleigh Barty surprised people by retiring from the game just a month short of her 26th birthday. She is a three-time Grand Slam winner and was in the first spot for 114 consecutive weeks, which is the fourth-longest streak in WTA history. Barty is known for having one of the steadiest serves in the game. Four-time Grand Slam champion Jim Courier once said that her slice technique is arguably the best backhand slice technique in the world including men’s and women’s tennis.