| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 251. A Zhou vs D Cummings |
| 0-1 | 36 | 2018 | Reykjavik Open | D30 Queen's Gambit Declined |
| 252. D Cummings vs Hjartarson |
| ½-½ | 47 | 2018 | Reykjavik Open | A10 English |
| 253. E Moradiabadi vs D Cummings |
| ½-½ | 31 | 2018 | Reykjavik Open | D04 Queen's Pawn Game |
| 254. D Cummings vs Y Norowitz |
| ½-½ | 34 | 2018 | Reykjavik Open | B00 Uncommon King's Pawn Opening |
| 255. D S Smith vs D Cummings |
| 0-1 | 36 | 2019 | Reykjavik Open | C45 Scotch Game |
| 256. D Cummings vs J Christiansen |
| 0-1 | 39 | 2019 | Reykjavik Open | A28 English |
| 257. D Cummings vs G Jones |
| 0-1 | 36 | 2019 | Reykjavik Open | A10 English |
| 258. D Cummings vs B Bejatovic |
| 1-0 | 34 | 2019 | Reykjavik Open | A28 English |
| 259. D Cummings vs R Praggnanandhaa |
| ½-½ | 56 | 2019 | Reykjavik Open | A15 English |
| 260. D Cummings vs M Lagarde |
| 0-1 | 37 | 2019 | Reykjavik Open | E94 King's Indian, Orthodox |
| 261. Nikolay Kartsev vs D Cummings |
| ½-½ | 38 | 2022 | Kvika Reykjavik Open | B13 Caro-Kann, Exchange |
| 262. D Cummings vs H Marzik |
| 1-0 | 41 | 2022 | Kvika Reykjavik Open | E71 King's Indian, Makagonov System (5.h3) |
| 263. L M Peng vs D Cummings |
| 1-0 | 57 | 2022 | Kvika Reykjavik Open | E32 Nimzo-Indian, Classical |
| 264. D Cummings vs D Mirza |
| 1-0 | 46 | 2022 | Kvika Reykjavik Open | A33 English, Symmetrical |
| 265. B I Johannsson vs D Cummings |
| 0-1 | 26 | 2022 | Kvika Reykjavik Open | D45 Queen's Gambit Declined Semi-Slav |
| 266. D Cummings vs V Stefansson |
| 1-0 | 38 | 2022 | Kvika Reykjavik Open | A85 Dutch, with c4 & Nc3 |
| 267. S Maze vs D Cummings |
| ½-½ | 65 | 2022 | Kvika Reykjavik Open | B10 Caro-Kann |
| 268. D Cummings vs P Laurent-Paoli |
| ½-½ | 73 | 2022 | Kvika Reykjavik Open | A21 English |
| 269. B Clarke vs D Cummings |
| 1-0 | 30 | 2022 | Kvika Reykjavik Open | B12 Caro-Kann Defense |
| 270. Kaidanov vs D Cummings |
| 1-0 | 78 | 2024 | World Senior Championship 50+ | E28 Nimzo-Indian, Samisch Variation |
| 271. R Naimanov vs D Cummings |
| 0-1 | 71 | 2024 | World Senior Championship 50+ | B13 Caro-Kann, Exchange |
| 272. D Cummings vs U Vinter-Schou |
| ½-½ | 41 | 2024 | World Senior Championship 50+ | A15 English |
| 273. Y Piskov vs D Cummings |
| ½-½ | 14 | 2024 | World Senior Championship 50+ | C42 Petrov Defense |
| 274. D Cummings vs Glek |
| 0-1 | 51 | 2024 | World Senior Championship 50+ | A21 English |
| 275. B Dimitrijeski vs D Cummings |
| 1-0 | 34 | 2024 | World Senior Championship 50+ | E49 Nimzo-Indian, 4.e3, Botvinnik System |
Kibitzing
