And we have a winner

DC wins 4th MLS Cup with all sorts of records.

They won with 10 men.
They scored 3 goals in 6min.
Freddy Adu became the youngest pro athlete on any Championship team, in any sport, in American History
Peter Nowack became the first US athlete to win a championship as a player and win a championship as a coach within two years of retiring as a player (I think I've got the details of that right)