ðɪ ˈiːstɚn ˈoʊpən ɪnvɪtˈeɪʃənəl, fˈɜːst plˈeɪd æz ðɪ ˈiːstɚn ˈoʊpən, wʌzɐ ɡˈɑːlf tˈʊɹnəmənt ɔnðə pˌiːdʒˌiːˈeɪ tˈʊɹ ðæt wʌz plˈeɪd ɪn mˈɛɹɪlˌænd ɪnðə nˈaɪntiːnhˈʌndɹɪd fˈɪfti z ænd ˈɜːli nˈaɪntiːnhˈʌndɹɪd sˈɪksti z.
The Eastern Open Invitational, first played as the Eastern Open, was a golf tournament on the PGA Tour that was played in Maryland in the 1950s and early 1960s.