Iranian fighters in the weight categories of 55, 63, 87 and 130 kg bagged gold medals.
Iran’s Shayan Afifi in 77kg weight category snatched a silver medal.
The event will be underway until July 22.
Greco-Roman or Graeco-Roman wrestling is a style of wrestling that is practiced worldwide. It was contested at the first modern Olympic Games in 1896 and has been included in every edition of the summer Olympics held since 1908.
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