Young Jack O'Brien 11-3-5-1 (KO 6)

Bouts 20 Rounds 160
KO Ratio 6% Opposition Ratio 02.242
Birth Name John Thomas Augustine Hagan
Birthdate 11 Dec 1894
Height 5′ 9″ / 175cm
Residence Philadelphia, Pennsylvania, USA
Birth place Philadelphia, Pennsylvania, USA
Boxer Division welterweight
Manager Trainer