William James Lombardy vs Kenneth Regan
75th US Open New York, NY USA round 3 1974.08.13
Barnes Defense 1/2-1/2

Andrew Soltis vs Kenneth Regan
USA-ch Pasadena, CA USA round 2 1978.06.??
Sicilian Defense: Closed 1/2-1/2

Kenneth Regan vs Edmar J Mednis
USA-ch Pasadena, CA USA round 6 1978.06.??
French Defense: Advance Variation 1/2-1/2

Anthony Miles vs Kenneth Regan
Baerum Baerum NOR round 3 1980.??.??
Nimzo-Indian Defense: Three Knights Variation, Duchamp Variation 1-0

Kenneth Regan vs Larry Mark Christiansen
USA-ch Pasadena, CA USA round 3 1978.06.??
Amazon Attack 0-1

Lawrence Day vs Kenneth Regan
Lone Pine Lone Pine, CA USA round 4 1977.03.23
Catalan Opening 1/2-1/2

William James Lombardy vs Kenneth Regan
USA-ch Pasadena, CA USA round 4 1978.06.??
Dutch Defense: Krause Variation 1-0

Kenneth Regan vs Michael Wilder
Masters Open New York, NY USA round 5 1976.04.18
Sicilian Defense: Alapin Variation 1-0