Whilst competing for Belgium, Rösch initially trained with Alexander Os and Lars Berger, who had similarly been dropped by the Norwegian Biathlon Association, in a training group they humorously nicknamed the "Feskslog" - Norwegian for "fish waste".
wˌaɪlst kəmpˈiːɾɪŋ fɔːɹ bˈɛldʒəm, ɹˈɜːʃ ɪnˈɪʃəli tɹˈeɪnd wɪð ˌælɪɡzˈændɚɹ ˌoʊˈɛs ænd lˈɑːɹz bˈɜːdʒɚ, hˌuː hæd sˈɪmɪlɚli bˌɪn dɹˈɑːpt baɪ ðə noːɹwˈiːdʒən bˈaɪəθlɑːn ɐsˌoʊsɪˈeɪʃən, ɪn ɐ tɹˈeɪnɪŋ ɡɹˈuːp ðeɪ hjˈuːmɚɹəsli nˈɪkneɪmd ðə "fˈɛskslɑːɡ" noːɹwˈiːdʒən fɔːɹ "fˈɪʃ wˈeɪst".