|Champions||Sporting Kansas City|
|Goals scored||272 (3.06 per match)|
|Top goal scorer(s)||Dom Dwyer|
The 2015 Lamar Hunt U.S. Open Cup was the 102nd edition of the oldest ongoing competition in American soccer.
The tournament had teams from all three tiers of men's professional soccer, plus teams from the top amateur leagues in the United States. Qualification began in 2014 with USASA regional winners qualifying for 2015. The tournament retained a format that had only two changes from 2014. For the first time, the competition will use a fixed bracket system starting with the Round of 16. Teams will be grouped geographically into groups of four teams, with each group being paired with another to determine the semifinal pairings. Secondly, a rule was formalized preventing teams from the same ownership group from meeting until the final.
The cash prize amounts are the same as last year, with the champion receiving $250,000 and the runner-up $60,000. Also, the team from each lower division that advances the furthest receives $15,000. The teams that received $15,000 were: (a) PSA Elite an amateur team that advanced to the 4th round where they lost to the LA Galaxy; (b) the Charlotte Independence of the USL advanced to the 5th round where they lost to the Chicago Fire; and (c) New York Cosmos of the NASL which also advanced to the 5th round before losing to the New York Red Bulls.
All United States Division I (MLS), Division II (NASL), & Division III (USL) teams qualify automatically.
|Enter in Preliminary Round||Enter in First Round||Enter in Second Round||Enter in Third Round||Enter in Fourth Round|
1 team/2 teams/1 team
12 teams/19 teams/9 teams
|NPSL||Chattanooga FC||1(4)||USL||Wilmington Hammerheads FC||1(3)||NPSL||Chattanooga FC||1|
|PDL||Ocala Stampede||1(2)||NPSL||Chattanooga FC||1(5)||NASL||Atlanta Silverbacks||2*|
|NPSL||Upward Stars||3(3)||USL||Charlotte Independence||4||NASL||Carolina RailHawks||0|
|USASA||Triangle Brigade||3(1)||NPSL||Upward Stars||1||USL||Charlotte Independence||1|
|NPSL||Miami United F.C.||2||USL||Charleston Battery||1||USL||Charleston Battery||3|
|PDL||SW Florida Adrenaline||1||NPSL||Miami United F.C.||0||NASL||Fort Lauderdale Strikers||2|
|NPSL||Lansing United||0(4)||NPSL||Lansing United||0||NASL||Indy Eleven||0|
|USASA||RWB Adria||0(2)||USL||Louisville City FC||1||USL||Louisville City FC||2*|
|PDL||Jersey Express S.C.||3||PDL||Jersey Express S.C.||1||NASL||New York Cosmos||3|
|USASA||Greek American AA||0||USL||New York Red Bulls II||0||PDL||Jersey Express S.C.||0|
|PDL||Reading United AC||1||PDL||Reading United AC||0|
|USASA||Maryland Bays||0||USL||Harrisburg City Islanders||3||USL||Harrisburg City Islanders||1|
|PDL||Western Mass Pioneers||1(3)||USL||Rochester Rhinos||1||USL||Rochester Rhinos||3*|
|NPSL||GBFC Thunder||1(4)||NPSL||GBFC Thunder||0|
|PDL||Long Island Rough Riders||3||PDL||Long Island Rough Riders||0|
|NPSL||Brooklyn Italians||1||USL||Real Monarchs||1||USL||Real Monarchs||0|
|USSSA||Harpo's FC||2||PDL||BYU Cougars||0(2)||USL||2||USL||1|
|USASA||KC Athletics||0||USSSA||Harpo's FC||0(4)||USSSA||Harpo's FC||1|
|NPSL||FC Tacoma 253||2||USL||Seattle Sounders FC 2||4*|
|PDL||Kitsap Pumas||5||PDL||Kitsap Pumas||2||USL||Seattle Sounders FC 2||2*|
|PDL||Michigan Bucks||3||PDL||Michigan Bucks||0||USL||Portland Timbers 2||1|
|NPSL||Detroit City FC||0||USL||Portland Timbers 2||2|
|PDL||AC Connecticut||2||USL||Richmond Kickers||2||USL||Richmond Kickers||3|
|NPSL||Virginia Beach City FC||3||NPSL||Virginia Beach City FC||0||NASL||Jacksonville Armada FC||0|
|PDL||West Virginia Chaos||1||USL||Pittsburgh Riverhounds||3||USL||Pittsburgh Riverhounds||1|
|NPSL||Fort Pitt FC Regiment||0||PDL||West Virginia Chaos||0||NASL||Tampa Bay Rowdies||0|
|PDL||Des Moines Menace||2||USL||Saint Louis FC||2*||USL||Saint Louis FC||1(3)|
|USASA||Madison Fire||1||PDL||Des Moines Menace||1||NASL||Minnesota United FC||1(1)|
|PDL||Laredo Heat||0(4)||USL||Austin Aztex||2||NASL||San Antonio Scorpions||0|
|USASA||NTX Rayados||0(2)||PDL||Laredo Heat||0||USL||Austin Aztex||2|
|USASA||GPS Massachusetts||1||USL||Tulsa Roughnecks||1|
|PDL||2||PDL||Seacoast United Phantoms||0||USL||Tulsa Roughnecks||0|
|PDL||Midland/Odessa Sockers||3||PDL||Midland/Odessa Sockers||1||USL||Oklahoma City Energy FC||1|
|NPSL||Tulsa Athletics||1||USL||Oklahoma City Energy FC||3|
|NPSL||Sonoma County Sol||2*||USL||Sacramento Republic FC||4|
|PDL||Burlingame Dragons FC||1||NPSL||Sonoma County Sol||2||USL||Sacramento Republic FC||7|
|PDL||FC Tucson||1||USL||Arizona United SC||0||USASA||Chula Vista FC||3|
|USASA||Chula Vista FC||2*||USASA||Chula Vista FC||3|
|USCS||1||PDL||Ventura County Fusion||3(6)||USL||LA Galaxy II||1|
|USASA||Cal FC||2||USASA||Cal FC||3(5)||PDL||Ventura County Fusion||2||PDL||Ventura County Fusion||1|
|USASA||PSA Elite||7||USL||Orange County Blues FC||1||USASA||PSA Elite||2|
|Fourth Round |
|Fifth Round |
June 30-July 1
|MLS||New York Red Bulls||3|
|MLS||New York Red Bulls||4|
|NASL||New York Cosmos||1|
|NASL||New York Cosmos||2(4)|
|MLS||New York City FC||2(3)|
|MLS||New York Red Bulls||1(3)|
|USL||Louisville City FC||0|
|MLS||New England Revolution||0|
|MLS||Orlando City SC||1|
|MLS||Orlando City SC||4(8)|
|MLS||Orlando City SC||2|
|MLS||Sporting Kansas City||1|
|USL||Saint Louis FC||0|
|MLS||Sporting Kansas City||6|
|USL||Oklahoma City Energy FC||1|
|MLS||Real Salt Lake||1|
|MLS||Real Salt Lake||2|
|USL||Seattle Sounders FC 2||1|
|MLS||Real Salt Lake||2|
|MLS||Seattle Sounders FC||1|
|MLS||Real Salt Lake||1|
|MLS||San Jose Earthquakes||2(6)|
|USL||Sacramento Republic FC||2(5)|
|MLS||San Jose Earthquakes||0|
|Leagues entering at this round|
|Preliminary round||91||4||none||4||USCS, USSSA, 2 of USASA|
|First round||89||42||2||40||NPSL, PDL, 9 of USASA|
The Preliminary Round draw was announced Wednesday, April 8, 2015. A total of 4 clubs competed, all amateur clubs from the fourth tier of American soccer.
The First Round draw was announced Wednesday, April 8, 2015. A total of 42 clubs competed, including the 2 winners from the preliminary round and 40 new entries from the 4th and 5th tiers.
The Second Round draw was announced on Wednesday, April 8, 2015. A total of 42 teams competed, including the 21 winners from the previous round and 21 new entries from the third tier United Soccer League. The lowest ranked teams this round are Harpo's FC, PSA Elite and Chula Vista FC from the fifth tier.
The Third Round draw was held on May 14. A total of 30 teams competed, including the 21 winners from the previous round and 9 new entries from the second tier North American Soccer League. The lowest ranked teams this round are PSA Elite and Chula Vista FC from the fifth tier. Among the notable results: In all seven matchups between the third-tier USL and second-tier NASL, the USL clubs were victorious.
|May 27||Harrisburg City Islanders (3)||1-3 (a.e.t.)||Rochester Rhinos (3)||Harrisburg, Pennsylvania|
|19:00 ET||Barril 8'
|Report||Duba 14' 38'
Samuels 115', 117', 120'
|Stadium: Skyline Sports Complex|
Referee: Darth Newman
|May 27||Saint Louis FC (3)||1-1 (a.e.t.)|
|Minnesota United FC (2)||Fenton, Missouri|
|19:00 CT||Gaul 80' (pen.), 114'
|Report||Brent Kallman 21'
Brian Kallman 114'
|Stadium: World Wide Technology Soccer Park|
Referee: Jon Freemon
The Fourth Round draw was held on May 21. A total of 32 teams will compete, including the 15 winners from the previous round and 17 new entries from top flight Major League Soccer. The lowest ranked team this round is PSA Elite from the fifth tier.
|June 16||San Jose Earthquakes (1)||2-2 (a.e.t.)|
|Sacramento Republic FC (3)||San Jose, California|
|19:30 PT||Wondolowski 74', 79'
|Report||López 6' (pen.)
|Stadium: Avaya Stadium|
Referee: Alex Chilowicz (New Jersey)
|June 16||Seattle Sounders FC (1)||1-3 (a.e.t.)||Portland Timbers (1)||Tukwila, Washington|
|19:30 PT||Rose 20'
Evans 39' 69'
Dempsey 113' 114'
|Stadium: Starfire Sports|
Referee: Daniel Radford (California)
|June 17||New York Cosmos (2)||2-2 (a.e.t.)|
|New York City FC (1)||Hempstead, New York|
|19:30 ET||Gorskie 40'
|Report||Poku 24', 57'
|Stadium: James M. Shuart Stadium|
Referee: Matthew Kreitzer (Maryland)
|June 17||Charleston Battery (3)||4-4 (a.e.t.)|
|Orlando City SC (1)||Charleston, South Carolina|
|19:30 ET||vanSchaik 58'
Portillo 105+2', 116' (pen.)
Rivas 76' (pen.), 94' (pen.), 105+2' (pen.)
|Stadium: Blackbaud Stadium|
Referee: Rubiel Vazquez (Florida)
The draw for the fifth round, which took place June 18, placed clubs into four 4-team regions. Clubs from different regions could not be drawn against one another. The lowest ranked team remaining is the Charlotte Independence of the third-tier United Soccer League.
All eight quarterfinal teams come from Major League Soccer, the top tier of professional soccer in the United States.
|July 21||New York Red Bulls (1)||1-1 (a.e.t.)|
|Philadelphia Union (1)||Harrison, New Jersey|
|16:00 ET||Sam 90+4'
|Stadium: Red Bull Arena|
Referee: Chris Penso (Ohio)
|September 30||Philadelphia Union (1)||1-1 (a.e.t.)|
|Sporting Kansas City (1)||Chester, Pennsylvania|
|19:00 ET||Lahoud 21'
Le Toux 23'
|Stadium: PPL Park|
Referee: Ted Unkel (Florida)
Players and teams still active in bold. 
|1||Dom Dwyer||Sporting Kansas City||5|
|Krisztián Németh||Sporting Kansas City|
|3||Tomasz Zahorski||Charlotte Independence||4|
|Carlos Rivas||Orlando City SC|
|Thomas Stewart||Sacramento Republic FC|
|6||Michael Barrios||FC Dallas||3|
|Robbie Keane||LA Galaxy|
|Rob Vincent||Pittsburgh Riverhounds|
|Mats Bjurman||PSA Elite|
|Michael Salazar||PSA Elite|
|Adnan Gabeljic||Sacramento Republic FC|
|Pablo Rossi||Seattle Sounders FC 2|