RIYADH — This time last year, Aryna Sabalenka was at the heart of a player rebellion against the women’s tour — while being unseated as world No. 1 by Iga Swiatek. The world’s best players were in Cancun for the year-ending WTA Tour Finals, which terrible weather conditions and a hastily constructed venue turned into a circus. Sabalenka said on social media that she felt “disrespected” by the standard of the event, which included practice courts that didn’t feel safe to play on. Just before the