Florence Baverel-Robert was a surprise winner of the women's biathlon 7.5km sprint on Thursday.
Perfect shooting moved the Frenchwoman past the German and Russian favourites.
Baverel-Robert took advantage of favourable weather conditions to beat Swede Anna Olofsson into second place with Lilla Efremova of the Ukraine third.
Briton Emma Fowler improved marginally on her previous Games performance, finishing 67th at San Sicario.
Fowler shot out all but two of her 12 targets but finished almost four minutes behind the winner.