Konstantinou won a silver medal at the 2019 World Shotgun Championships in the skeet team event.[2] A few months later he won another skeet team medal, with Cyprus taking bronze at the 2019 European Shotgun Championships.[3] He also reached the final shoot-off in the individual event, finishing in sixth place and securing his spot at the 2020 Summer Olympics in Tokyo.[4][5] First-place finisher Jakub Tomeček had already qualified for Tokyo, and three other shooters ahead of Konstantinou came from countries who had already filled their quota places, meaning he and third-place finisher Nikolaos Mavrommatis received them instead.[5]
The 2020 Summer Olympics were delayed due to the COVID-19 pandemic, during which Konstantinou placed second at the 2020 Paphos Skeet Cup.[6] He also achieved an eighth-place finish at the second stage of the 2021 ISSF World Cup in New Delhi,[7] his best-ever result at a World Cup competition.[2] In Tokyo, Konstantinou placed 12th in the men's skeet event with a score of 121, failing to qualify for the final in his Olympic debut.[8]
