What is your take on another option on the best-of-five Grand Slam matches for men: best three out of four sets and if the match is tied 2–2 then use the 10-point tiebreaker. Same ending as if it's five sets without having to play a fifth set.

Australian Open champion Madison Keys is no longer able to play at a WTA tournament in the U.S. in February, after her success in Melbourne made her too highly ranked to enter. Keys, who rose to world No.