Efraim Nikolantonakis | ISSF
- 2025 - 3rd place European Championship Skeet Men Junior Chateauroux
- 2022 – 3rd place GRAND PRIX JR – Chania
- 2022 – 2nd Panhellenic Champion Skydra
- Individual record 119/125
- 2021 – 1st place Skeet Cup Race Chania (teenagers) new individual record 119/125
- 2021 – 1st place Skeet Cup Race Skydra (teenagers) new individual record 117/125
- 2019 – 1st place Panhellenic Champion Skeet Malakasa (teenagers)
- 2019 – 1st place Skeet Cup Race Lagkadas (teenagers)
- 2019 – 2nd place Skeet Cup Race Volos (teenagers) with individual record 112/125
- 2019 – 4th place Grand Prix – Battle of Crete Skeet (teens)
- 2019 – 2nd place Panhellenic competition Compaq Sporting Chania (teens)
