Ryan Field is a stadium in Evanston, Illinois, United States on the campus of Northwestern University. It is primarily used for American football, and is the home field of the Northwestern Wildcats football team. The field opened in 1926 and holds 47,130 people. Prior to 1997, the stadium was named Dyche Stadium, for William Dyche, Class of 1882, former Evanston mayor and overseer of the building project. In 1997, the field was renamed Ryan Field in honor of the family of Patrick G. Ryan, who was then the chairman of Northwestern's board of trustees.