Which of the following was the greatest service returner in the history of the game of tennis: Andre Agassi or Martina Hingis?
Martina Hingis Martina Hingis (born 30 September 1980) is a Swiss professional tennis player, a former world No. 1 singles player and currently ranked world No. 2 in doubles by the WTA. She has spent a total of 209 weeks as the singles No. 1 and has won five Grand Slam singles titles, thirteen Grand Slam women's doubles titles, winning a calendar-year doubles Grand Slam in 1998, and seven Grand Slam mixed doubles titles; for a combined total of twenty-five major titles. In addition, she has won the season-ending WTA Championships two times in singles and three times in doubles, and an Olympic silver medal.
Agnieszka Radwańska Agnieszka Radwańska (nicknamed Aga, born 6 March 1989) is a Polish professional tennis player. Radwańska achieved a career-high singles ranking of world No. 2 in July 2012. She has won twenty career singles titles, and is nicknamed "La Profesora" among players and the media. Her achievements include winning WTA's Fan Favourite Award six times, Shot of the Year four times, and Shot of the Month on a regular basis. She has been described as making intelligent use of the court.