Who was the Tennis Masters Cup champion in 2000, Gustavo Kuerten or Stan Wawrinka?
Gustavo Kuerten: Gustavo Kuerten (] ; born 10 September 1976), nicknamed Guga, is a retired former World No. 1 tennis player from Brazil. Gustavo Kuerten:  He won the French Open singles title three times (1997, 2000, and 2001), and was the Tennis Masters Cup champion in 2000. Stan Wawrinka:  His career highlights include three Grand Slam titles at the 2014 Australian Open, 2015 French Open and 2016 US Open, where he defeated the world No. 1 player in the final on all three occasions, reaching the final of the 2017 French Open, winning an ATP World Tour Masters 1000 title at the Monte-Carlo Masters in 2014, and reaching three other finals at 2008 Rome, 2013 Madrid and 2017 Indian Wells.
Gustavo Kuerten