Roy C Ervin vs James Tarjan
Lone Pine Lone Pine, CA USA round 9.14 1975.04.23
English Opening: King’s English Variation, Botvinnik System 0-1

Roy C Ervin vs Gert Ligterink
Lone Pine Lone Pine, CA USA round 1 1978.04.02
Queen’s Indian Defense: Anti-Queen’s Indian System 1/2-1/2

Arnold Denker vs Roy C Ervin
Lone Pine Lone Pine, CA USA round 1 1976.03.07
Döry Defense 1-0

Anthony Saidy vs Roy C Ervin
Lone Pine Lone Pine, CA USA round 3 1976.03.09
English Opening: Anglo-Indian Defense, Grünfeld Formation 0-1

Roy C Ervin vs Martin Appleberry
72nd US Open Ventura, CA USA round 9 1971.08.17
Sicilian Defense: O’Kelly Variation 0-1