wˈɔːkɚ wʌzðə mˈɛts pˈɪtʃɪŋ kˈoʊtʃ fɔːɹ fˈoːɹtiːn sˈiːzənz, fɹʌm nˈaɪntiːnhˈʌndɹɪd sˈɪksti ˈeɪt θɹuː nˈaɪntiːnhˈʌndɹɪd ˈeɪɾi wˈʌn, ɪŋklˈuːdɪŋ sˈɜːvɪs ɔnðə nˈaɪntiːnhˈʌndɹɪd sˈɪksti nˈaɪn wˈɜːld tʃˈæmpiən "ɐmˈeɪzɪn" mˈɛts.
Walker was the Mets' pitching coach for 14 seasons, from 1968 through 1981, including service on the 1969 World Champion "Amazin'" Mets.