æt fˈaʊntɪn vˈæli, dʒˈænsən wʌzɐ θɹˈiːjˈɪɹ lˈɛɾɚ wˈɪnɚ, ænd sˈɛt sˈɪŋɡəlsˈiːzən ɹˈɛkɚdz æt ðə skˈuːl fɔːɹ hˈoʊm ɹˈʌnz twˈɛlv, ˌɑːɹbˌiːˈaɪ fˈoːɹɾi fˈoːɹ, ænd tɹˈɪpəlz fˈaɪv.
At Fountain Valley, Janssen was a three-year letter winner, and set single-season records at the school for home runs (12), RBIs (44), and triples (5).