Cairo, April 6 -- Olympic champion Eleftherios Petrounias bagged a rings gold on the opening day of Artistic Gymnastics Apparatus World Cup finals here, with five gold medals decided across men's and women's events.

Olympic champion Eleftherios Petrounias showcased his experience on the rings to secure goldon Sunday, followed by Armenia's Artur Avetisyan, who earned silver, while China's younggymnast Liu Yang took the bronze.

Petrounias said he had overcome a last-minute muscle cramp to compete in Cairo, adding thathe was satisfied with his performance but aiming for higher scores in the future, according toXinhua.

"For me, this championship means, first of all, points for the qualification to the World Championships in Rotterdam in Octo...