Manchester United defeated Real Madrid by a final score of 3-1 in front of 109,318 fans at Michigan Stadium.
It was the largest crowd to see a soccer game in the United States, breaking the mark of 101,799 set at the Rose Bowl for the 1984 Olympic final.
"That was incredible," United's Michael Keane said. "Obviously, it is the biggest crowd I've ever played in front of, and it is for a friendly in the States. I've always heard they don't care for our football, but there were 109,000 people out there. That's pretty crazy anywhere in the world."
Cristiano Ronaldo surprisingly played in the match, coming on in the 74th minute.
Tickets sold out in less than a day back in April.