sˌɪdʒɪfɹˈiːdoʊ mɜːkˈɑːdoʊ sˈiːnts bˈɔːɹn twˈɛnti wˈʌn dᵻsˈɛmbɚ nˈaɪntiːnhˈʌndɹɪd sˈɪksti ˈeɪt ɪn təlˈuːkə ɪz ɐ mˈɛksɪkən fˈɔːɹmɚ pɹəfˈɛʃənəl fˈʊtbɔːlɚ hˌuː plˈeɪd æz ɐ mˈɪdfiːldɚ.
Sigifredo Mercado Sáenz (born 21 December 1968 in Toluca) is a Mexican former professional footballer who played as a midfielder.