Marta Kostyuk praises Daria Kasatkina ‘courage’ and shakes hands at Italian Open

Ukrainian lauds former Russian for switching nationality to Australia22-year-old makes point of shaking hands with world No 15 in RomeDaria Kasatkina’s switch from Russian tennis to play for Australia has been given a stamp of approval from her Ukrainian conqueror at the Italian Open.Marta Kostyuk, one of the women’s tour’s in-form players, has made a high-profile point along with many of her fellow Ukrainian players of not shaking hands with Russian or Belarusian opponents aft