Wimbledon champ Barbora Krejcikova WDs from Australian Open

(Photo credit: Kirby Lee-Imagn Images)
Wimbledon champion and World No. 10 Barbora Krejcikova withdrew from the upcoming Australian Open on Sunday due to a back problem.

Also on Sunday, former World No. 1 players Caroline Wozniacki of Denmark and Karolina Pliskova of the Czech Republic also withdrew from the tournament.

"Hi everyone, I wanted to share a quick update regarding my withdrawal from the Australian Open," Kre