Injury burden measures the total number of player-games lost to injury across a squad over the course of a season. One player missing one match equals one player-game lost. It is the simplest, most unforgiving accounting of a club's medical luck, and it matters because no tactical system survives losing its starters 250 times over.
This season's La Liga data shows a spread from 66 to 251. That gap, nearly fourfold, tells you that some squads have been playing a fundamentally different sport than others.
Most Cursed by Injury Burden
1. Girona (251 player-games lost) - The single highest burden in the division, and it isn't particularly close. Girona have averaged roughly seven players unavailable per matchday. Building on last season's Champions League breakthrough was always going to be hard. Doing it with a squad this depleted borders on structural impossibility.
2. Real Madrid (219) - Madrid's depth means 219 player-games lost looks different on paper than it does for a mid-table club. But depth is not infinite, and 219 is the kind of number that forces Carlo Ancelotti to deploy configurations he never planned for. The Bernabeu's treatment room has been busier than its trophy cabinet this spring.
3. Athletic Club (209) - Ernesto Valverde's system depends on intensity and pressing cohesion. Losing 209 player-games chips away at both. Athletic's dip in form after the winter break correlates almost perfectly with their injury spike, which is rarely a coincidence.
4. Real Sociedad (182) - A club that already lacked the squad depth of their top-four rivals has been forced to stretch even thinner. At 182, they sit well above the league median and it has shown in their results since February.
5. Villarreal (182) - Tied with La Real at 182, Villarreal's burden has been particularly concentrated in their backline, which explains a lot about a defense that looked organized in autumn and porous by spring.
Most Blessed by Injury Burden
1. Espanyol (66) - The healthiest squad in the division by a comfortable margin. Sixty-six player-games lost across an entire season is almost suspiciously low. Espanyol's medical staff deserve a raise, or at least a closer look at whatever they are putting in the recovery shakes.
2. Osasuna (72) - Pamplona's finest have lost just 72 player-games, giving Jagoba Arrasate consistent access to his preferred eleven. Consistency of selection tends to produce consistency of results.
3. Alaves (83) - At 83, Alaves have enjoyed the kind of squad availability that lets a modest roster punch at its absolute ceiling. Whether that ceiling is high enough is a separate question.
4. Elche (102) - Crossing the 100 threshold but still well below the league average. Elche's relative health has been a quiet factor in what has been a more competitive season than many predicted for them.
5. Celta Vigo (115) - Rounding out the blessed five at 115, Celta have had enough availability to keep their attacking patterns intact for most of the campaign.
What This Tells Us
The range from Espanyol's 66 to Girona's 251 represents a 185 player-game gap. That is not a small difference in philosophy or preparation. It is, largely, variance.
Historically, injury burden regresses hard. Clubs at the extremes - both cursed and blessed - tend to move sharply toward the mean the following season. Girona should not expect to lose 251 player-games again. Espanyol should not expect to lose only 66. The medical lottery resets every summer, and next season's numbers will look different.
What does not reset is the damage already done. For Girona, Real Madrid, and Athletic Club, no amount of future regression returns the points they dropped while half their squad sat in the physio room. The luck already happened. It just was not evenly distributed.
