The USLPA outlined the reason for its protest in a statement:
“Players in the USL are proud to contribute to the growth of professional soccer in communities across the country. But for decades, the system governing our league has prioritized expansion, markets, and infrastructure while leaving the day-to-day professional standards for players unresolved.
"The United States Soccer Federation sanctions the professional leagues in this country and sets the standards that define them. We believe those standards must include the players whose work makes the professional game possible.
"During select matches at the U.S. Open Cup, players will wear a message directed at the Federation asking a simple question: Do you stand with the players? Professional soccer should come with professional standards. Players are asking the governing body of the sport to recognize its responsibility in ensuring that those standards exist in practice, not just in theory.”