Stan Wawrinka, in his final Australian Open appearance, battled through a grueling five-set thriller to reach the third round. The 40-year-old Swiss veteran, playing his last professional season, outlasted young qualifier Arthur Gea in a marathon match. This historic win marks him as the oldest man to reach this stage at a Grand Slam since 1978.source https://timesofindia.indiatimes.com/sports/tennis/top-stories/exhausted-40-year-old-stan-wawrinka-creates-grand-slam-history-at-australian-open/articleshow/127141112.cms