Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Manly United | 2 | 0 | 0 | 2 | 0 | 0 | 0 | 0 |
 Rockdale Ilinden FC | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Sydney United 58 FC | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Canberra Olympic | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 |
 Sutherland Sharks | 1 | 1 | 0 | 0 | 1 | 1 | 0 | 0 |
 Hakoah Sydney City | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Mt Druitt Town | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Queensland Lions | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Perth | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Wollongong Wolves | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
 Sydney II | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
Harry Callahan is a professional forward. Throughout his career, Harry Callahan has scored 1 goals and provided 2 assists in 18 appearances across 2 clubs. Among the clubs he has represented — APIA Leichhardt Tigers, Wollongong Wolves — Harry Callahan was most prolific at APIA Leichhardt Tigers, where he scored 1 goals in 11 appearances.
