Many of the changes were long overdue. Shea Stadium had been put through some tremendous stress in the mid-70's from the many visitors who took up temporary residence here. Shea Stadium will go down in history as the only stadium ever to house two Major League teams and two NFL teams in the same year. Renovations in 1974 to Yankee Stadium that took the reknown ballpark practically down to the studs, caused the Yankees to move out and make Shea Stadium their home for 2 years.