The two mid-30s uber-fans have had plenty of help along the way from O’Brien’s sister, Courtney Hirsch, who was named Jomboy ...
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SI Power List: Jomboy's Most Memorable Lip Reads
James Vincent Michael O'Brien, or more commonly known as Jomboy, rose to fame for his informative, fan-friendly and wildly entertaining breakdowns of the various happenings during baseball games.
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