According to the NFLPA, the Indianapolis Colts have the worst kind of turf, called ‘Slit Film’, in Lucas Oil Stadium as their playing surface—which only two other NFL teams still use (*as three teams reportedly ‘ditched it’ this offseason as new data became available).
Per the IndyStar’s Chloe Peterson, it’s potentially contributed to the Colts being more susceptible to injuries over the past few seasons compared to their NFL counterparts:
“It’s been a long-standing issue for the Colts. Man Games Lost NFL found the Colts to be the second-most injured team between 2009-22, just behind the Giants.