Historically the game developed on natural grass turf. Renovation of monuments, cleaning the ponds and delivering soil and grass turf started. Some of the set was designed with real grass turf and soil. There is an artificial soccer turf known as the Astroturf. It was the first NFL stadium to use artificial turf. Games are played in ice rinks with artificial turf covering the ice. These can be a slab of concrete overlaid with a coir mat or artificial turf. The football team plays at Brooks Stadium, which is notable for its teal artificial turf. Gwalior also has the Railway Hockey Stadium with artificial turf. McMahon also did not rule out playing on artificial turf. This was the first World Series played entirely on artificial turf. There is evidence showing higher rates of player injury on artificial turf. The stadium turf has been replaced several times. A study linked MRSA to the abrasions caused by artificial turf. It is played on the lush green turf.