ɪn hɪz ɹˈʊki sˈiːzən ɪnðə mˈeɪdʒɚz, wɪððə ɹˈeɪnɪŋ wˈɜːld tʃˈæmpiən nˈaɪntiːnhˈʌndɹɪd fˈoːɹɾi θɹˈiː kˈɑːɹdɪnəlz, klˈaɪn wʌzɐ stɹˈɔŋ kəntɹˈɪbjuːɾɚ tə ðə ɹˈɛdbɜːdz səksˈɛsfəl dᵻfˈɛns ʌvðə nˈæʃənəl lˈiːɡ pˈɛnənt.
In his rookie season in the Majors, with the reigning world champion 1943 Cardinals, Klein was a strong contributor to the Redbirds' successful defence of the National League pennant.