Ukrainian tennis player Marta Kostyuk says she has a lot of respect for Iga Swiatek and added the Pole deserves to be the new world No. 1. Swiatek has been absolutely brilliant over the last two and a half months as she has won her last 23 matches. After winning Doha, Indian Wells and Miami, Swiatek became the world No. 1 for the first time in her career. Just before the start of Miami, former three-time Grand Slam champion Barty announced a shock retirement from tennis. Barty filled the paperwork to have her name removed from the WTA rankings list as Swiatek r …