FIFA rules state that World Cup matches must be played on natural grass. For this year's tournament, scientifically-engineered sod (that can withstand playing conditions and differing climates) was deployed in stadiums with artificial turf.

Seven NFL stadiums temporarily replaced their synthetic turf with natural grass just for the 2026 FIFA World Cup, prompting the #WorthTheCost movement from NFL players.

FIFA rules state that World Cup matches must be played on natural grass. For this year's tournament, scientifically-engineered sod (that can withstand playing conditions and…