Team-mates Johnny Matthews and Alfie Hale then scored in a dramatic 3-2 win that clinched Waterford's fifth title in seven years.
With Hibs he scored in the replayed final of the 1972-73 FAI Cup at Flower Lodge, earning Hibernians a 1-0 win.
[citation needed] This earned them a place in the 1975-76 UEFA Cup, the first time they had ever qualified for European competition.
In October 1975, Humphries was named as the Soccer Writers' Association of Ireland (SWAI) Player of the Month.
[8] Humphries was part of the roster of the North American Soccer League (NASL) team St. Louis Stars, wearing the number 17 shirt.
[9] The Stars would finish last in the Pacific Conference Humphries returned to Ireland in 1977 to re-sign with boyhood club Cork Celtic.
Humphries worked in Cork docks while playing in the League of Ireland and bred and trained greyhounds.
[15] In March 2000, his 16-year-old son, Carl Jr., was banned from football for ten years following an incident in a Munster Senior League match between Castleview A.F.C.