Rome, Jan 4 (LaPresse) – Nick Kyrgios' personal campaign against Jannik Sinner continues. The Australian tennis player could not resist launching yet another barb at the South Tyrolean, who has been targeted by the Aussie since the infamous Clostebol case broke out. This time he did not do so directly but through a photo posted on Instagram by Cruz Hewitt, son of Lleyton Hewitt, former world number one and Davis captain of Australia. The 16-year-old trained with the world number one on the Rod Laver Arena in Melbourne and captured the day by posting a photo of him with Sinner. Kyrgios commented with an eloquent ‘cooked post’, accompanying it with a syringe as an emoticon.