Roger Federer has withdrawn from the 2021 Australian Open, the tournament announced on Monday.
원문출처 : https://www.cnn.com/2020/12/28/tennis/roger-federer-2021-australian-open-spt-intl/index.html
원문출처 : https://www.cnn.com/2020/12/28/tennis/roger-federer-2021-australian-open-spt-intl/index.html