| 1 | Sat 19 Sep 2020 | 2 0-1 v GetafeGetafe 1-0 Osasuna | Spanish La Liga |
| 2 | Sun 27 Sep 2020 | 2 1-3 v LevanteOsasuna 1-3 Levante | Spanish La Liga |
| 3 | Sun 4 Oct 2020 | 22-0 v Celta VigoOsasuna 2-0 Celta Vigo | Spanish La Liga |
| 4 | Sun 18 Oct 2020 | 20-0 v EibarEibar 0-0 Osasuna | Spanish La Liga |
| 5 | Sat 24 Oct 2020 | 2 1-0 v Athletic BilbaoOsasuna 1-0 Athletic Bilbao | Spanish La Liga |
| 6 | Sat 31 Oct 2020 | 21-3 v Atlético MadridOsasuna 1-3 Atlético Madrid | Spanish La Liga |
| 7 | Sat 7 Nov 2020 | 20-1 v SevillaSevilla 1-0 Osasuna | Spanish La Liga |
| 8 | Fri 20 Nov 2020 | 21-1 v HuescaOsasuna 1-1 Huesca | Spanish La Liga |
| 9 | Sun 29 Nov 2020 | 20-4 v BarcelonaBarcelona 4-0 Osasuna | Spanish La Liga |
| 10 | Sun 6 Dec 2020 | 20-2 v Real BetisOsasuna 0-2 Real Betis | Spanish La Liga |
| 11 | Fri 11 Dec 2020 | 2 2-3 v Real ValladolidReal Valladolid 3-2 Osasuna | Spanish La Liga |
| 12 | Sat 19 Dec 2020 | 21-3 v VillarrealOsasuna 1-3 Villarreal | Spanish La Liga |
| 13 | Tue 22 Dec 2020 | 22-2 v ElcheElche 2-2 Osasuna | Spanish La Liga |
| 14 | Thu 31 Dec 2020 | 21-1 v AlavésOsasuna 1-1 Alavés | Spanish La Liga |
| 15 | Sun 3 Jan 2021 | 21-1 v Real SociedadReal Sociedad 1-1 Osasuna | Spanish La Liga |
| 16 | Sat 9 Jan 2021 | 20-0 v Real MadridOsasuna 0-0 Real Madrid | Spanish La Liga |
| 17 | Thu 21 Jan 2021 | 2 1-1 v ValenciaValencia 1-1 Osasuna | Spanish La Liga |
| 18 | Mon 1 Feb 2021 | 20-1 v Real BetisReal Betis 1-0 Osasuna | Spanish La Liga |
| 19 | Sun 7 Feb 2021 | 22-1 v EibarOsasuna 2-1 Eibar | Spanish La Liga |
| 20 | Sun 14 Feb 2021 | 21-0 v LevanteLevante 0-1 Osasuna | Spanish La Liga |
| 21 | Mon 22 Feb 2021 | 2 0-2 v SevillaOsasuna 0-2 Sevilla | Spanish La Liga |
| 22 | Sat 27 Feb 2021 | 2 1-0 v AlavésAlavés 0-1 Osasuna | Spanish La Liga |
| 23 | Sat 6 Mar 2021 | 20-2 v BarcelonaOsasuna 0-2 Barcelona | Spanish La Liga |
| 24 | Sat 13 Mar 2021 | 20-0 v Real ValladolidOsasuna 0-0 Real Valladolid | Spanish La Liga |
| 25 | Sat 20 Mar 2021 | 2 0-0 v HuescaHuesca 0-0 Osasuna | Spanish La Liga |
| 26 | Sat 3 Apr 2021 | 20-0 v GetafeOsasuna 0-0 Getafe | Spanish La Liga |
| 27 | Sun 11 Apr 2021 | 22-1 v VillarrealVillarreal 1-2 Osasuna | Spanish La Liga |
| 28 | Sun 18 Apr 2021 | 2 2-0 v ElcheOsasuna 2-0 Elche | Spanish La Liga |
| 29 | Wed 21 Apr 2021 | 23-1 v ValenciaOsasuna 3-1 Valencia | Spanish La Liga |
| 30 | Sat 1 May 2021 | 20-2 v Real MadridReal Madrid 2-0 Osasuna | Spanish La Liga |
| 31 | Sat 8 May 2021 | 22-2 v Athletic BilbaoAthletic Bilbao 2-2 Osasuna | Spanish La Liga |
| 32 | Tue 11 May 2021 | 2 3-2 v CádizOsasuna 3-2 Cádiz | Spanish La Liga |
| 33 | Sat 22 May 2021 | 20-1 v Real SociedadOsasuna 0-1 Real Sociedad | Spanish La Liga |
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