dɪˈeɪɡoʊ hˈɑːɹtfiːld bˈɔːɹn θˈɜːɾi wˈʌn dʒˈænjuːˌɛɹi nˈaɪntiːnhˈʌndɹɪd ˈeɪɾi wˈʌn, nˈɪkneɪmd ˌɛl ɡˈɑːɾoʊ hˈɑːɹtfiːld hˈɑːɹtfiːld ðə kˈæt ɪn spˈænɪʃ ɪz ɐ stˈɑːkbɹoʊkɚ ænd ɐ fˈɔːɹmɚ tˈɛnɪs plˈeɪɚɹ ɔnðɪ ˌeɪtˌiːpˈiː tˈʊɹ fɹʌm ˌɑːɹdʒəntˈiːnə.
Diego Hartfield (born 31 January 1981), nicknamed 'El Gato Hartfield' (Hartfield the Cat in Spanish) is a stockbroker and a former tennis player on the ATP Tour from Argentina.