| Jun 9, 2026 | Knaak | ½–½ | Vehi Bach | Round 8: Knaak, Rainer - Vehi Bach, Victor Manuel | Queen's Gambit Declined: Queen's Knight Variation | |
| Jun 8, 2026 | Guigonis | 0–1 | Knaak | Round 7: Guigonis, Dominique - Knaak, Rainer | Queen's Gambit Declined: Ragozin Defense, Alekhine Variation | |
| Jun 7, 2026 | Knaak | ½–½ | Boulard | Round 6: Knaak, Rainer - Boulard, Eric | Catalan Opening: Open Defense | |
| Jun 6, 2026 | Luminet | ½–½ | Knaak | Round 5: Luminet, Denis - Knaak, Rainer | Sicilian Defense: Old Sicilian | |
| Jun 5, 2026 | Knaak | 1–0 | Stoinev | Round 4: Knaak, Rainer - Stoinev, Metodi | Bogo-Indian Defense: Retreat Variation | |
| Jun 4, 2026 | Algars | 0–1 | Knaak | Round 3: Algars, Olle - Knaak, Rainer | Scotch Game: Mieses Variation | |
| Jun 3, 2026 | Knaak | ½–½ | Van Hoolandt | Round 2: Knaak, Rainer - Van Hoolandt, Patrick | Nimzo-Indian Defense: Sämisch Variation, Romanovsky Variation | |
| Jun 2, 2026 | Deubelbeiss | 0–1 | Knaak | Round 1: Deubelbeiss, Rene - Knaak, Rainer | English Opening: King's English Variation | |
| Jun 1, 2026 | Sturua | 1–0 | Knaak | Round 9: Sturua, Zurab - Knaak, Rainer | Queen's Gambit Declined: Ragozin Defense, Vienna Variation | |
| Apr 28, 2026 | Motuz | ½–½ | Knaak | Round 9: Motuz, Karol - Knaak, Rainer | Queen's Gambit Declined: Vienna Variation, Quiet Variation | |
| Apr 27, 2026 | Knaak | 1–0 | Haik | Round 8: Knaak, Rainer - Haik, Aldo | King's Indian Defense: Orthodox Variation | |
| Apr 26, 2026 | Kalegin | ½–½ | Knaak | Round 7: Kalegin, Evgenij - Knaak, Rainer | Sicilian Defense: Nyezhmetdinov-Rossolimo Attack | |
| Apr 25, 2026 | Knaak | ½–½ | Kosten | Round 6: Knaak, Rainer - Kosten, Anthony C. | Bogo-Indian Defense: Grünfeld Variation | |
| Apr 22, 2026 | Knaak | 0–1 | Ortega | Round 4: Knaak, Rainer - Ortega, Lexy | Slav Defense: Exchange Variation | |
| Apr 21, 2026 | Bykhovsky | 1–0 | Knaak | Round 3: Bykhovsky, Avigdor - Knaak, Rainer | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| Apr 18, 2026 | Knaak | 1–0 | Orton | Round 1: Knaak, Rainer - Orton, Stephen L A | King's Indian Defense: Semi-Averbakh System | |
| Nov 1, 2025 | Knaak | ½–½ | Pogorelov | Round 11: Knaak, Rainer - Pogorelov, Ruslan | Bogo-Indian Defense: Grünfeld Variation | |
| Oct 31, 2025 | Povah | 0–1 | Knaak | Round 10: Povah, Nigel E - Knaak, Rainer | Queen's Pawn Game: Accelerated London System, Steinitz Countergambit | |
| Oct 30, 2025 | Knaak | 0–1 | Maier | Round 9: Knaak, Rainer - Maier, Christian | Indian Defense: Anti-Nimzo-Indian | |
| Oct 29, 2025 | Chapman | 0–1 | Knaak | Round 8: Chapman, Terry P D - Knaak, Rainer | King's Indian Attack | |
| Oct 28, 2025 | Knaak | 1–0 | Syre | Round 7: Knaak, Rainer - Syre, Christian | Old Indian Defense: Normal Variation | |
| Oct 26, 2025 | Reprintsev | 1–0 | Knaak | Round 6: Reprintsev, Alexander - Knaak, Rainer | Vienna Game: Mieses Variation | |
| Oct 25, 2025 | Knaak | 1–0 | Rooze | Round 5: Knaak, Rainer - Rooze, Jan | Queen's Gambit Declined: Ragozin Defense | |
| Oct 24, 2025 | Rivera | ½–½ | Knaak | Round 4: Rivera, Daniel - Knaak, Rainer | Ruy Lopez: Morphy Defense, Schliemann Defense Deferred | |
| Oct 23, 2025 | Knaak | 1–0 | Ernst | Round 3: Knaak, Rainer - Ernst, Michael | Slav Defense: Quiet Variation, Schallopp Defense | |
| Oct 22, 2025 | Nemeth | ½–½ | Knaak | Round 2: Nemeth, Zoltan - Knaak, Rainer | Italian Game: Two Knights Defense, Modern Bishop's Opening | |
| Oct 21, 2025 | Knaak | 1–0 | Tocco | Round 1: Knaak, Rainer - Tocco, Paolo | Mikenas Defense | |
| Oct 5, 2025 | Sturua | 1–0 | Knaak | European individual senior chess championship 2025 - Open 65+, Rabac, Croatia | French Defense: Exchange Variation | |
| Oct 4, 2025 | Knaak | 1–0 | Malesevic | European individual senior chess championship 2025 - Open 65+, Rabac, Croatia | Caro-Kann Defense: Two Knights Attack, Mindeno Variation, Exchange Line | |
| Oct 3, 2025 | Thorsteinsson | ½–½ | Knaak | European individual senior chess championship 2025 - Open 65+, Rabac, Croatia | Zukertort Opening | |
| Oct 2, 2025 | Knaak | 1–0 | Goormachtigh | European individual senior chess championship 2025 - Open 65+, Rabac, Croatia | Grünfeld Defense: Three Knights Variation | |
| Oct 1, 2025 | Smith | 0–1 | Knaak | European individual senior chess championship 2025 - Open 65+, Rabac, Croatia | French Defense: Advance Variation, Paulsen Attack | |
| Sep 29, 2025 | Pomes Marcet | 1–0 | Knaak | European individual senior chess championship 2025 - Open 65+, Rabac, Croatia | Nimzo-Indian Defense: Rubinstein System | |
| Sep 27, 2025 | Serra Olives | ½–½ | Knaak | European individual senior chess championship 2025 - Open 65+, Rabac, Croatia | Ruy Lopez: Marshall Attack | |
| May 3, 2025 | Knaak | ½–½ | Solomon | Round 9: Knaak, Rainer - Solomon, Kenny | Nimzo-Indian Defense: Normal Variation, Gligoric System, Keres Variation | |
| May 2, 2025 | Knaak | ½–½ | Rosh Jain | Round 8: Knaak, Rainer - Rosh Jain | Queen's Gambit Declined: Semi-Tarrasch Defense, Exchange Variation | |
| May 1, 2025 | Maldonado Gonzales | ½–½ | Knaak | Round 7: Maldonado Gonzales, Stefano - Knaak, Rainer | French Defense: Steinitz Variation | |
| Apr 30, 2025 | Knaak | 1–0 | Noy | Round 5: Knaak, Rainer - Noy, Eyal | Nimzo-Indian Defense: Kmoch Variation | |
| Apr 30, 2025 | Ibrayev | 1–0 | Knaak | Round 6: Ibrayev, Nurlan - Knaak, Rainer | Queen's Gambit Declined: Ragozin Defense | |
| Apr 29, 2025 | Knaak | 0–1 | Kiolbasa | Round 4: Knaak, Rainer - Kiolbasa, Oliwia | Nimzo-Indian Defense: Normal Variation, Schlechter Defense | |
| Apr 28, 2025 | Bettalli | ½–½ | Knaak | Round 3: Bettalli, Francesco - Knaak, Rainer | Rapport-Jobava System | |
| Apr 27, 2025 | Knaak | 1–0 | Kienboeck | Round 2: Knaak, Rainer - Kienboeck, Benjamin | Nimzo-Indian Defense: St. Petersburg Variation, Romanishin–Psakhis Variation | |
| Apr 27, 2025 | Di Fonzo | 0–1 | Knaak | Round 1: Di Fonzo, Valerio - Knaak, Rainer | French Defense: Classical Variation, Burn Variation, Morozevich Line | |
| Apr 17, 2025 | Knaak | 0–1 | Harutjunyan | paphos2025 | Queen's Gambit Declined: Chigorin Defense, Main Line | |
| Apr 16, 2025 | Isaakidis | ½–½ | Knaak | paphos2025 | English Opening: Neo-Catalan | |
| Apr 15, 2025 | Knaak | 1–0 | Borsos | paphos2025 | Wade Defense | |
| Apr 14, 2025 | Knaak | ½–½ | Michaelides | paphos2025 | Queen's Gambit Declined: Queen's Knight Variation | |
| Apr 14, 2025 | Markidis | 1–0 | Knaak | paphos2025 | Ruy Lopez: Closed, Anti-Marshall | |
| Apr 13, 2025 | Dyshliuk | 0–1 | Knaak | paphos2025 | French Defense: Exchange Variation | |
| Apr 12, 2025 | Knaak | 1–0 | Kefalas | paphos2025 | Slav Defense: Exchange Variation | |
| Apr 11, 2025 | Knaak | 0–1 | Kyparissopoulos | paphos2025 | Benoni Defense | |
| Feb 26, 2025 | Vaisser | 0–1 | Knaak | World Senior Team 2025 S65 | Nimzo-Indian Defense: Normal Variation, Classical Defense | |
| Feb 25, 2025 | Knaak | 1–0 | Garcia Palermo | World Senior Team 2025 S65 | Queen's Gambit Declined: Harrwitz Attack, Two Knights Defense | |
| Feb 24, 2025 | Knaak | 1–0 | Ogaard | World Senior Team 2025 S65 | Queen's Gambit Declined: Three Knights Variation | |
| Feb 23, 2025 | Uddenfeldt | 0–1 | Knaak | World Senior Team 2025 S65 | Queen's Gambit Declined: Queen's Knight Variation | |
| Feb 21, 2025 | Nunn | ½–½ | Knaak | World Senior Team 2025 S65 | Ruy Lopez: Closed, Martinez Variation | |
| Feb 20, 2025 | Knaak | ½–½ | Littlewood | World Senior Team 2025 S65 | Queen's Gambit Declined: Harrwitz Attack | |
| Feb 19, 2025 | Knaak | 1–0 | Heinig | World Senior Team 2025 S65 | Dutch Defense: Stonewall Variation, Modern Variation | |
| Feb 18, 2025 | Fegan | ½–½ | Knaak | World Senior Team 2025 S65 | Nimzo-Larsen Attack: Modern Variation | |
| Feb 17, 2025 | Mojzis | ½–½ | Knaak | World Senior Team 2025 S65 | King's Indian Attack: Sicilian Variation | |
| Nov 28, 2024 | Maier | ½–½ | Knaak | World Senior Chess Championship 2024 | Zukertort Opening | |
| Nov 27, 2024 | Zapata | ½–½ | Knaak | World Senior Chess Championship 2024 | Ruy Lopez: Closed, Pilnik Variation | |
| Nov 26, 2024 | Knaak | 1–0 | Ftacnik | World Senior Chess Championship 2024 | Benoni Defense | |
| Nov 25, 2024 | Sturua | 0–1 | Knaak | World Senior Chess Championship 2024 | Nimzo-Indian Defense: Reshevsky Variation | |
| Nov 24, 2024 | Knaak | ½–½ | Sunye Neto | World Senior Chess Championship 2024 | Yusupov-Rubinstein System | |
| Nov 22, 2024 | Mikhalevski | 0–1 | Knaak | World Senior Chess Championship 2024 | Catalan Opening: Open Defense | |
| Nov 21, 2024 | Knaak | 1–0 | Rivera | World Senior Chess Championship 2024 | Queen's Gambit Declined: Austrian Defense | |
| Nov 20, 2024 | Silva | ½–½ | Knaak | World Senior Chess Championship 2024 | Ruy Lopez: Morphy Defense, Cozio Defense | |
| Nov 19, 2024 | Knaak | 1–0 | Morais | World Senior Chess Championship 2024 | Indian Defense: Budapest Defense, Alekhine Variation, Abonyi Variation | |
| Nov 17, 2024 | Knaak | ½–½ | Ibar | World Senior Chess Championship 2024 | Benko Gambit Accepted: Modern Variation | |
| Nov 2, 2024 | Chapman | ½–½ | Knaak | Round 9: Chapman, Terry P D - Knaak, Rainer | King's Indian Attack | |
| Nov 1, 2024 | Knaak | 1–0 | Moen | Round 8: Knaak, Rainer - Moen, Ole Christian | Slav Indian | |
| Oct 30, 2024 | Knaak | ½–½ | Ftacnik | Round 6: Knaak, Rainer - Ftacnik, Lubomir | Grünfeld Defense: Exchange Variation, Classical Variation | |
| Oct 27, 2024 | Wengholm | 0–1 | Knaak | Round 3: Wengholm, Anders - Knaak, Rainer | King's Indian Attack | |
| Oct 26, 2024 | Privitera | 0–1 | Knaak | Round 1: Privitera, Franco - Knaak, Rainer | Queen's Pawn Game: London System, with e6 | |
| Oct 26, 2024 | Knaak | 1–0 | Levacic | Round 2: Knaak, Rainer - Levacic, Damir | Bogo-Indian Defense: Wade-Smyslov Variation | |
| Oct 23, 2024 | Sturua | 1–0 | Knaak | Round 7: Sturua, Zurab - Knaak, Rainer | Queen's Gambit Declined: Queen's Knight Variation | |
| Oct 23, 2024 | Nunn | ½–½ | Knaak | Round 5: Nunn, John D M - Knaak, Rainer | Ruy Lopez: Closed | |
| Oct 23, 2024 | Knaak | 1–0 | Gnirenko | Round 4: Knaak, Rainer - Gnirenko, Vitaliy | Dutch Defense: Stonewall Variation, Modern Variation | |
| May 15, 2024 | Knaak | 1–0 | Ivanovic | European Senior Team Chess Championship 2024 - Section 65 + | Queen's Gambit Declined: Harrwitz Attack | |
| May 14, 2024 | Ftacnik | 1–0 | Knaak | European Senior Team Chess Championship 2024 - Section 65 + | Zukertort Opening | |
| May 13, 2024 | Nemeth | ½–½ | Knaak | European Senior Team Chess Championship 2024 - Section 65 + | Italian Game: Giuoco Pianissimo, Italian Four Knights Variation | |
| May 12, 2024 | Knaak | 1–0 | Uddenfeldt | European Senior Team Chess Championship 2024 - Section 65 + | Bogo-Indian Defense: Exchange Variation | |
| May 11, 2024 | Quinn | 0–1 | Knaak | European Senior Team Chess Championship 2024 - Section 65 + | Queen's Gambit Declined: Modern Variation | |
| May 10, 2024 | Haik | ½–½ | Knaak | European Senior Team Chess Championship 2024 - Section 65 + | Queen's Gambit Declined: Exchange Variation, Positional Variation | |
| May 9, 2024 | Knaak | ½–½ | Nunn | European Senior Team Chess Championship 2024 - Section 65 + | King's Indian Defense: Averbakh Variation, Modern Defense | |
| May 8, 2024 | Knaak | 1–0 | Huss | European Senior Team Chess Championship 2024 - Section 65 + | French Defense: Winawer Variation, Petrosian Variation | |
| May 7, 2024 | Woeber | ½–½ | Knaak | European Senior Team Chess Championship 2024 - Section 65 + | Italian Game: Deutz Gambit | |
| Mar 10, 2024 | Reuker | 0–1 | Knaak | Runde 9: Reuker, Jari - Knaak, Rainer | Queen's Gambit Declined | |
| Mar 9, 2024 | Knaak | ½–½ | Wachinger | Runde 8: Knaak, Rainer - Wachinger, Nikolas | Nimzo-Indian Defense: Normal Variation, Classical Defense | |
| Mar 8, 2024 | Knaak | ½–½ | Meins | Runde 7: Knaak, Rainer - Meins, Gerlef | Queen's Gambit Accepted: Classical Defense, Main Line | |
| Mar 7, 2024 | Guichard | 0–1 | Knaak | Runde 6: Guichard, Pauline - Knaak, Rainer | Queen's Gambit Declined: Traditional Variation | |
| Mar 6, 2024 | Knaak | 0–1 | Krastev | Runde 5: Knaak, Rainer - Krastev, Alexander | Nimzo-Indian Defense: St. Petersburg Variation | |
| Mar 5, 2024 | Kopylov | ½–½ | Knaak | Runde 4: Kopylov, Michael - Knaak, Rainer | Catalan Opening: Open Defense | |
| Mar 4, 2024 | Knaak | ½–½ | Wiegmann | Runde 3: Knaak, Rainer - Wiegmann, Sascha | Queen's Gambit Accepted: Classical Defense, Main Line | |
| Mar 3, 2024 | Hejazipour | 1–0 | Knaak | Runde 2: Hejazipour, Mitra - Knaak, Rainer | Queen's Pawn Game: Symmetrical Variation | |
| Mar 2, 2024 | Knaak | ½–½ | Radeva | Runde 1: Knaak, Rainer - Radeva, Viktoria | Semi-Slav Defense | |
| Oct 27, 2023 | Sandor Biro | ½–½ | Rainer Knaak | 65+ World Senior Championship | Italian Game: Two Knights Defense, Max Lange Attack | |
| Oct 26, 2023 | Knaak | * | Tsynman | 65+ World Senior Championship | ? | |
| Oct 25, 2023 | Madeira | ½–½ | Knaak | 65+ World Senior Championship | Scotch Game: Classical Variation, Millennium Variation | |