| 1 | Sun 27 Sep 2020 | 12-1 v EibarEibar 1-2 Athletic Bilbao | Spanish La Liga |
| 2 | Thu 1 Oct 2020 | 10-1 v CádizAthletic Bilbao 0-1 Cádiz | Spanish La Liga |
| 3 | Sun 4 Oct 2020 | 10-1 v AlavésAlavés 1-0 Athletic Bilbao | Spanish La Liga |
| 4 | Sun 18 Oct 2020 | 12-0 v LevanteAthletic Bilbao 2-0 Levante | Spanish La Liga |
| 5 | Sat 24 Oct 2020 | 10-1 v OsasunaOsasuna 1-0 Athletic Bilbao | Spanish La Liga |
| 6 | Sat 31 Oct 2020 | 12-1 v SevillaAthletic Bilbao 2-1 Sevilla | Spanish La Liga |
| 7 | Sun 8 Nov 2020 | 1 1-2 v Real ValladolidReal Valladolid 2-1 Athletic Bilbao | Spanish La Liga |
| 8 | Mon 23 Nov 2020 | 14-0 v Real BetisAthletic Bilbao 4-0 Real Betis | Spanish La Liga |
| 9 | Sun 29 Nov 2020 | 11-1 v GetafeGetafe 1-1 Athletic Bilbao | Spanish La Liga |
| 10 | Fri 4 Dec 2020 | 10-2 v Celta VigoAthletic Bilbao 0-2 Celta Vigo | Spanish La Liga |
| 11 | Sat 12 Dec 2020 | 12-2 v ValenciaValencia 2-2 Athletic Bilbao | Spanish La Liga |
| 12 | Tue 15 Dec 2020 | 11-3 v Real MadridReal Madrid 3-1 Athletic Bilbao | Spanish La Liga |
| 13 | Fri 18 Dec 2020 | 12-0 v HuescaAthletic Bilbao 2-0 Huesca | Spanish La Liga |
| 14 | Tue 22 Dec 2020 | 11-1 v VillarrealVillarreal 1-1 Athletic Bilbao | Spanish La Liga |
| 15 | Thu 31 Dec 2020 | 10-1 v Real SociedadAthletic Bilbao 0-1 Real Sociedad | Spanish La Liga |
| 16 | Sun 3 Jan 2021 | 11-0 v ElcheAthletic Bilbao 1-0 Elche | Spanish La Liga |
| 17 | Wed 6 Jan 2021 | 12-3 v BarcelonaAthletic Bilbao 2-3 Barcelona | Spanish La Liga |
| 18 | Mon 25 Jan 2021 | 15-1 v GetafeAthletic Bilbao 5-1 Getafe | Spanish La Liga |
| 19 | Sun 31 Jan 2021 | 11-2 v BarcelonaBarcelona 2-1 Athletic Bilbao | Spanish La Liga |
| 20 | Sun 7 Feb 2021 | 11-1 v ValenciaAthletic Bilbao 1-1 Valencia | Spanish La Liga |
| 21 | Mon 15 Feb 2021 | 14-0 v CádizCádiz 0-4 Athletic Bilbao | Spanish La Liga |
| 22 | Sun 21 Feb 2021 | 11-1 v VillarrealAthletic Bilbao 1-1 Villarreal | Spanish La Liga |
| 23 | Fri 26 Feb 2021 | 11-1 v LevanteLevante 1-1 Athletic Bilbao | Spanish La Liga |
| 24 | Sun 7 Mar 2021 | 12-1 v GranadaAthletic Bilbao 2-1 Granada | Spanish La Liga |
| 25 | Wed 10 Mar 2021 | 11-2 v Atlético MadridAtlético Madrid 2-1 Athletic Bilbao | Spanish La Liga |
| 26 | Sun 14 Mar 2021 | 10-0 v Celta VigoCelta Vigo 0-0 Athletic Bilbao | Spanish La Liga |
| 27 | Sat 20 Mar 2021 | 11-1 v EibarAthletic Bilbao 1-1 Eibar | Spanish La Liga |
| 28 | Wed 7 Apr 2021 | 11-1 v Real SociedadReal Sociedad 1-1 Athletic Bilbao | Spanish La Liga |
| 29 | Sat 10 Apr 2021 | 10-0 v AlavésAthletic Bilbao 0-0 Alavés | Spanish La Liga |
| 30 | Wed 21 Apr 2021 | 10-0 v Real BetisReal Betis 0-0 Athletic Bilbao | Spanish La Liga |
| 31 | Sun 25 Apr 2021 | 12-1 v Atlético MadridAthletic Bilbao 2-1 Atlético Madrid | Spanish La Liga |
| 32 | Wed 28 Apr 2021 | 12-2 v Real ValladolidAthletic Bilbao 2-2 Real Valladolid | Spanish La Liga |
| 33 | Mon 3 May 2021 | 11-0 v SevillaSevilla 0-1 Athletic Bilbao | Spanish La Liga |
| 34 | Sat 8 May 2021 | 12-2 v OsasunaAthletic Bilbao 2-2 Osasuna | Spanish La Liga |
| 35 | Wed 12 May 2021 | 1 0-1 v HuescaHuesca 1-0 Athletic Bilbao | Spanish La Liga |
| 36 | Sun 16 May 2021 | 10-1 v Real MadridAthletic Bilbao 0-1 Real Madrid | Spanish La Liga |
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