The mid-December rebellion that rattled American soccer was something of an existential moment for the federation.
US Open Cup: Under Scrutiny
The Archives Room: What was the Soccer War? – Society for American Soccer History
US Soccer denies MLS request to pull 1st teams out of US Open Cup
MLS proves with U.S. Open Cup move it doesn't get soccer tradition - Los Angeles Times
US soccer media's reaction to MLS abandoning US Open Cup - World Soccer Talk
MLS's arrogant withdrawal from US Open Cup is about controlling Messi Mania, MLS
MLS commissioner Garber criticizes state of U.S. Open Cup - ESPN
MLS-U.S. Open Cup spat begs a provocative question: Who controls U.S. soccer? - Yahoo Sports
USL 'disappointed' with handling of MLS-U.S. Open Cup dispute - ESPN
MLS's arrogant withdrawal from US Open Cup is about controlling Messi Mania, MLS
Lionel Messi and Inter Miami will not play in the US Open Cup as MLS gets what it wants and will only send eight teams to the 110-year old tournament
MLS proves with U.S. Open Cup move it doesn't get soccer tradition - Los Angeles Times
