The 2010 Lamar Hunt U.S. Open Cup was the 97th edition of the USSF's annual national soccer championship, running from June through early October.
The tournament proper featured teams from the top five levels of the American Soccer Pyramid. Wikipedia
Champions: Seattle Sounders FC (2nd title)
Dates: Jun 15, 2010 – Oct 5, 2010
Location: United States and Lumen Field