7th October 1986- League Cup Second Round Second Leg, Rochdale 1 Watford 2 (Watford won 3-2 on aggregate) http://watford.fcdb.info?id=3673 https://en.wikipedia.org/wiki/1986%E2%80%9387_Football_League_Cup
23rd September 1986-League Cup Second Round First Leg, Watford 1 Rochdale 1 http://watford.fcdb.info?id=3670
16th March 1976- Division Four, Watford 3 Rochdale 0 https://oldwatford.com/2001/09/26/26th-september-2001-new-division-one-watford-3-birmingham-city-3/