Roy Halladay (born 1977), American retired Major League Baseball pitcher
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Halliday, a list of people with the surname Halliday, Hallyday or Haliday
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Daniel Halladay (born 1826), American engineer, inventor and businessman
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Halladay Farmhouse, Duanesburg, New York, on the National Register of Historic Places
Roy Halladay's perfect game | Roy Halladay | Halladay Farmhouse | Daniel Halladay |