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| # | White | Rating | Black | Rating | Result | Moves | ECO | Tournament | Date | |
|---|---|---|---|---|---|---|---|---|---|---|
| 37 | Patterson, K. | 1158 | Porth, A. | 1071 | 0-1 | 41  | C21 | EIO (Reserve) | 26 Sep 2009 | |
| 277 | Patterson, K. | 1158 | Porth, A. | 1071 | 0-1 | 41 | C21 | EIO (Reserve) | 26 Sep 2009 | |
| 338 | Patterson, K. | 1247 | Porth, D. | 592 | 1-0 | 40 | C21 | Idaho Closed | 20 Feb 2011 | |
| 511 | Brimstein, W. | 646 | Porth, D. | 464 | 1-0 | 38 | C21 | SIO (Reserve) | 02 Nov 2013 | |
| 671 | Porth, D. | 528 | Baumann, C. | 978 | 0-1 | 23 | C21 | Idaho Open (Reserve) | 18 Jun 2016 | |
| 672 | Porth, D. | 528 | Bian, R. | 423 | 0-1 | 16 | C21 | Idaho Open (Reserve) | 19 Jun 2016 |