Army Black Knights

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Mack O'Halloran is an offensive lineman for Army who stands 6'3" and weighs 301 pounds. A native of Downers Grove, Illinois, O'Halloran attended Downers Grove South before joining the Black Knights as a three-star recruit in the 2023 class. Entering his junior season in 2026, he continues his tenure with Army. From Downers Grove South (USMAPS) · Downers Grove, IL.

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