Real Sociedad host Atletico Madrid at Anoeta on September 13, 2026 in a Regular Season - 5 fixture that finds both sides seeking consistency early in the campaign. Real Sociedad sit 9th while Atletico Madrid occupy 7th, a gap of just two places that reflects how tightly packed the table remains at this early stage.

Recent form is the clearest lens through which to view this match. Real Sociedad arrive unbeaten in their last three La Liga outings, having beaten Elche 3-2 away on September 7, drawn 0-0 at home with Celta Vigo on September 3, and defeated Espanyol 2-1 on August 29. That run follows back-to-back defeats to open the season against Real Madrid and Real Betis, suggesting Matarazzo's side has settled after a difficult start. Atletico Madrid, by contrast, head into this match off a 3-0 defeat away to Athletic Club on September 5, a result that snapped a run of one win, one draw, and one win in their opening three league games. Simeone's side has therefore shown more inconsistency across the opening month than their table position might suggest.

Head-to-head history adds context without offering a clear psychological edge either way. Recent meetings between these two have been tightly contested, including a 2-2 draw on April 18, 2026 and a 1-1 draw on January 4, 2026, alongside a heavier 3-2 Atletico win on March 7, 2026. The pattern of close scorelines suggests neither side has dominated this fixture in recent seasons.

With no injuries reported for either squad, both managers should be able to field close to full-strength lineups, meaning the match is likely to be decided by current form and tactical execution rather than enforced squad changes. Given Real Sociedad's upturn in form against Atletico's recent stumble, this matchday 5 clash carries a sense of both teams looking to establish momentum as the season takes shape.