On 19 August 1978 he came off the bench at Highbury against Leeds United, the first Australian to play a league game for Arsenal, and later scored 89 goals in 150 matches for Sydney City. He won 60 caps and scored 25 goals for Australia, captained the side, took back-to-back NSL titles with Sydney City in 1981 and 1982, led the league's scoring charts in 1982 and entered Australian football's hall of fame in 1999. Career record: 60 caps and 25 goals for Australia; club career at West Adelaide Soccer Club, Hakoah Sydney City East, APIA Leichhardt.
| 1973–1976 | Croydon Kings |
| 1977–1977 | West Adelaide Soccer Club |
| 1978–1979 | Arsenal |
| 1978–1978 | Adelaide City Football Club |
| 1979–1980 | West Adelaide Soccer Club |
| 1981–1986 | Hakoah Sydney City East |
| 1989–1989 | APIA Leichhardt |
| 1990–1990 | Sutherland Sharks |
| Australia | 60 caps, 25 goals |
Australia legends whose careers overlapped Kosmina's
One rank above: Aurelio Vidmar at #26.
One rank below: Kevin Muscat at #28.
Australia's editorial top five: Harry Kewell · Tim Cahill · Mark Viduka · Mark Schwarzer · Mile Jedinak.