Amid the shocking news that he tested positive for cocaine on the day he lost to Fabio Wardley last month, former WBO heavyweight champion Joseph Parker issued the following statement on his Instagram account: "I want to address today’s news. Before my recent fight, I took a voluntary test and have now been informed that it returned and adverse result. This came as a real surprise to me. I did not take any prohibited substance, I do not use performance and handing drugs and do not support their use. I am cooperating fully with the process now underway, and I am confident investigation clear my name. Thank you to everyone who has sent messages of Support. It means a great deal to me and my family. When the investigation is complete, I will speak openly and answer questions."