| Game |
| Result | Moves |
Year | Event/Locale | Opening |
| 26. A Ostrovskiy vs A Jacobson |
| 1-0 | 63 | 2019 | Bay Area International Open | C09 French, Tarrasch, Open Variation, Main line |
| 27. A Jacobson vs A Katz |
| ½-½ | 54 | 2019 | Bay Area International Open | A15 English |
| 28. A Jacobson vs K Kavutskiy |
| ½-½ | 64 | 2019 | Bay Area International Open | B00 Uncommon King's Pawn Opening |
| 29. A Jacobson vs J Tarjan |
| 1-0 | 51 | 2019 | Bay Area International Open | C95 Ruy Lopez, Closed, Breyer |
| 30. A Jacobson vs S Erenburg |
| ½-½ | 75 | 2019 | PRO League Group Stage | B12 Caro-Kann Defense |
| 31. A Liang vs A Jacobson |
| 1-0 | 32 | 2019 | PRO League Group Stage | C00 French Defense |
| 32. T M Le vs A Jacobson |
| 1-0 | 44 | 2019 | PRO League Group Stage | A15 English |
| 33. A Jacobson vs J Yu |
| ½-½ | 37 | 2019 | PRO League Group Stage | C11 French |
| 34. A Jacobson vs A Katz |
| 0-1 | 34 | 2019 | PRO League Group Stage | C41 Philidor Defense |
| 35. A Jacobson vs Iturrizaga Bonelli |
| 1-0 | 64 | 2019 | PRO League Group Stage | B27 Sicilian |
| 36. R Gao vs A Jacobson |
| ½-½ | 74 | 2019 | PRO League Group Stage | C09 French, Tarrasch, Open Variation, Main line |
| 37. K Gulamali vs A Jacobson |
| ½-½ | 33 | 2019 | PRO League Group Stage | A04 Reti Opening |
| 38. S Foisor vs A Jacobson |
| 1-0 | 61 | 2019 | PRO League Group Stage | E10 Queen's Pawn Game |
| 39. A Jacobson vs M Zhai |
| 1-0 | 45 | 2019 | PRO League Group Stage | B15 Caro-Kann |
| 40. J H Canty vs A Jacobson |
| 0-1 | 34 | 2019 | PRO League Group Stage | C54 Giuoco Piano |
| 41. K Kiewra vs A Jacobson |
| ½-½ | 59 | 2019 | PRO League Group Stage | E06 Catalan, Closed, 5.Nf3 |
| 42. A Jacobson vs Vinesh Ravuri |
| 1-0 | 20 | 2019 | PRO League Group Stage | C60 Ruy Lopez |
| 43. A Jacobson vs A Grabinsky |
| 1-0 | 65 | 2019 | PRO League Group Stage | C10 French |
| 44. R Song vs A Jacobson |
| 1-0 | 73 | 2019 | PRO League Group Stage | C55 Two Knights Defense |
| 45. W Wang vs A Jacobson |
| 1-0 | 43 | 2019 | Marshall Spring IM | C07 French, Tarrasch |
| 46. A Jacobson vs Mishra |
| 1-0 | 45 | 2019 | Marshall Spring IM | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 47. B Daggupati vs A Jacobson |
 | ½-½ | 25 | 2019 | Marshall Spring IM | C11 French |
| 48. A Jacobson vs N Chasin |
| 1-0 | 60 | 2019 | Marshall Spring IM | B47 Sicilian, Taimanov (Bastrikov) Variation |
| 49. A Jacobson vs R A Allicock |
| 1-0 | 23 | 2019 | Marshall Spring IM | D80 Grunfeld |
| 50. A Escobar Forero vs A Jacobson |
| 1-0 | 46 | 2019 | Marshall Spring IM | C11 French |
Kibitzing
