context: She started throwing at the age of 12 and at 13 threw 37m58cm to win the English Schools Championships.
source: At the age of 16 Holroyd threw 52m50 and became a senior international athlete.
reference_original: A 16 anni Holroyd lanciò a 52,50m e diventò un'atleta internazionale senior.
reference_flipped: A 16 anni Holroyd lanciò a 52,50m e diventò un atleta internazionale senior.