The immediate future of former Australian Open champion Angelique Kerber is in doubt, and the German is retiring from her second round match at Adelaide International with a back injury.
Kerber, who also reached the semifinals at Melbourne Park in 2018, lost the first set to Dayana Yastremska 6-3 and was losing 2-0 in the second set when he called the coach to receive treatment on his lower back, before granting the match. .
The 31-year-old, who also won Wimbledon and the US Open. UU., It occupies the 18th place in the world but has had problems since it reached the fourth round at the Australian Open last year.
He lost four of his last five Grand Slam games, including the losses of the first round at both the French Open and the United States in 2019. The four defeats reached players ranked outside the top 30 in the world.
It is a great fall from grace for the German, who ranked number two in the world only 12 months ago.
The result means that Yastemska will now play against Donna Vekic in the next round.
Elsewhere in Adelaide International, Russian Andrey Rublev reached the quarterfinals with a 6-3, 6-3 victory over Sam Querry.
Rublev is considered one of the ones to be seen at the Australian Open next week, having won the Qatar Open last week and with a victory over Roger Federer at the Cincinnati Masters in August. Rublev’s victory in Qatar led the 22-year-old to the top 20 in the world for the first time in his career.