Wow...never heard of it!
“GrassMaster is a hybrid grass sports playing field surface composed of natural grass combined with artificial fibres.”
Isn’t the “natural grass” growing in soil?
They need some artificial mud to add realism.
Only the Packers and Eagles play on it. The Patriots have a practice facility that uses it. Pretty much every major world soccer team plays on it.
They already do. It's called CBS.