Glen Duffy is a former professional footballer from Ireland who played primarily as a defender. He began his career in the League of Ireland, where he gained recognition for his solid defensive skills and work ethic. Duffy played for several clubs during his career, contributing to their defensive lines and helping to secure important victories. After retiring from professional football, Duffy transitioned into coaching, sharing his knowledge and experience with younger players. His dedication to the sport continues to influence aspiring footballers in Ireland, as he emphasizes the importance of teamwork and discipline in achieving success on the field.