On March 10, 2024, during the BNP Paribas Open in Indian Wells, California, and again out of competition on March 18, Sinner tested positive ... in her native Poland contained the substance.
JannikSinner Starts His Australian Open Title Defense ... a five-time major winner from Poland, fended off top-ranked doubles player Katerina Siniakova 6-3, 6-4 on John Cain Arena.