Dee ihe na-aga n'ihu maka paragraf a - N'afọ 2018, Stefanidi mụbara nchịkọta nrite ya, na-ewere ọnọdụ nke atọ (4.80 m) na World Indoor Championships na Birmingham, na nke mbụ (4.85 m) na European Championships na Berlin. O meriri Diamond League nke afọ 2018
usoro (4.87 m) maka afọ nke atọ ma mechie oge ahụ na ebe nke abụọ (4.85 m) n'azụ Anzhelika Sidorova, na-anọchite anya Europe na Continental Cup.