Michigan Stadium is the largest stadium in the USA and 3rd largest in the world (stuff10)
An attendance 109,318 saw the 2014 International Champions Cup soccer match between Real Madrid and Manchester United - a record for a football game in the USA (stuff10)
After a 1956 renovation, athletic director Fritz Crisler announced Michigan Stadium's capacity as 101,001. Since then, the official capacity has always ended in 1 and is said to be reserved for Crisler. (mls-all-star)