Installed Prescription Athletic Turf in 1991 , giving Michigan its first natural grass field since 1968 .
FIELD : 360 x 160 feet -- Installed FieldTurf in 2003 , returning Michigan to an artificial surface for the first time since the 1990 season .
Installed Prescription Athletic Turf in 1991 , giving Michigan Michigan 's first natural grass field since 1968 .
FIELD : 360 x 160 feet -- Installed FieldTurf in 2003 , returning Michigan to an artificial surface for the first time since the 1990 season .