Tokyo, July 29 -- Renowned Polish coach Tomasz Wiktorowski, who played a pivotal role in Iga Swiatek's rise to the summit of women's tennis, is set to work with Japan's Naomi Osaka as the four-time Grand Slam champion seeks to revive her career after a prolonged break. Wiktorowski, 44, guided Swiatek to four of her six Grand Slam titles and helped her dominate the WTA rankings until their partnership ended in October last year. A Warsaw native, Wiktorowski is widely respected for his strategic acumen and previously coached Polish great Agnieszka Radwanska from 2011 to 2018. The coaching switch comes at a crucial time for Osaka, who parted ways with French coach Patrick Mouratoglou over the weekend following a second-round exit at the Washin...