25th October 1977- League Cup Third Round, West Bromwich Albion 1 Watford 0

http://watford.fcdb.info/index.php?page=matches
Daily Telegraph, 26 Oct 1977
Birmingham Post, 26 Oct 1977

Watford Observer match report

https://en.wikipedia.org/wiki/1977%E2%80%9378_Football_League_Cup