NWC March op
Seattle 1978
| Date | Players | Type | Elo Average | Games | Rounds |
| Mar, 1978 | 4 | Swiss | 1238 | 3 | 5 |
| Name | ELO | Points | ||
|
GM Seirawan, Yasser | 2400 | 2.5 | |
|
GM Browne, Walter S | 2550 | 0.5 | |
|
IM McCambridge, Vincent | 0.0 | ||
|
Whitehead, Jay | 0.0 | ||
NWC March op Games
| White | Black | Result | Round | Date | Opening | View |
| McCambridge, V | Seirawan, Y | 0-1  |
? | 1978 | A42 Modern defence, Averbakh system |   |
| Seirawan, Y | Browne, W | ½-½ |
? | 1978 | A26 English, closed system |   |
| Seirawan, Y | Whitehead, J | 1-0 |
? | 1978 | A21 English opening | |