In the national rankings of the GameDay Challenge Ohio State improved its ranking from 20th to 11th in diversion rate and from 9th to 6th in recycling .
The GameDay Challenge include both stadium and tailgate materials .
In the national rankings of the GameDay Challenge , which include both stadium and tailgate materials , Ohio State improved its ranking from 20th to 11th in diversion rate and from 9th to 6th in recycling .