Milos Raonic
Canadian Milos Raonic is often described as having “one of the best serves among his contemporaries”. To date, his career highlights include a Grand Slam final (2016 Wimbledon Championships); two Grand Slam semifinals; and three ATP World Tour Masters 1000 finals, 2014 Paris Masters, and the 2016 Indian Wells Masters.
Gustavo Kuerten
“Guga” is now a retired former World No. 1 from Brazil. He has won the French Open singles title a total of three times (1997, 2000, and 2001), and was also the Tennis Masters Cup champion in 2000. However, Kuerten suffered numerous injuries, leading him to miss a number of tournaments in the years between 2002 and 2005. After a few failed comebacks, he officially retired in May 2008, in his career he has won 20 singles and 8 doubles titles.