In 2012 the U.S. Soccer Federation included all Division I, II, and III professional clubs in the U.S. Open Cup proper for the first time ever. The Division I field included all 16 U.S.-based Major League Soccer teams, which was the first time since 2006 that all Division I teams took part in the nation's oldest soccer tournament.
For the Colorado Rapids, 2012 was the club's first time back in the tournament since 2007. Over the previous four years, the Rapids had failed to advance past the Open Cup Qualifying rounds.
The 2014 tournament featured 80 teams, an increase from the 68 that competed in 2013, marking the largest field in the modern era (1995-present). MLS teams entered in the fourth round.
|All-Time Colorado Rapids Open Cup Results (10-13-0)|
|09/15/1996||QF||at Kansas City Wizards||W 3-2|
|10/12/1996||SF||at Rochester Rhinos (A-League)||L 0-3|
|07/20/1997||3rd||at Chicago Stingers (D3 Pro)||L 1-2|
|07/13/1999||3rd||Seattle Sounders (A-League)||W 1-0|
|08/13/1999||QF||at Tampa Bay Mutiny||W 1-0|
|09/01/1999||SF||at ^Charleston Battery (A-League)||W 3-0|
|09/14/1999||F||*Rochester Rhinos (A-League)||L 0-2|
|06/14/2000||2nd||at Richmond Kickers (A-League)||L 0-3|
|06/27/2001||2nd||at Pittsburgh Riverhounds (A-League)||L 0-2|
|07/17/2002||3rd||at Charleston Battery (A-League)||W 1-0 (OT)|
|08/07/2002||QF||at Dallas Burn||L 0-1 (OT)|
|08/05/2003||4th||+Kansas City Wizards||W 3-2|
|08/27/2003||QF||at Chicago Fire||L 1-2|
|07/20/2004||4th||at Dallas Burn||L 0-3|
|08/03/2005||4th||at Minnesota Thunder (USL-1)||L 1-4|
|08/02/2006||4th||at Real Salt Lake||W 1-0|
|08/23/2006||QF||at LA Galaxy||L 1-3 (OT)|
|07/10/2007||3rd||California Victory (USL-1)||W 3-1|
|08/07/2007||QF||at Seattle Sounders (USL-1)||L 0-5|
|05/29/2012||3rd||at Tampa Bay Rowdies (NASL)||W 3-1|
|06/05/2012||4th||at Sporting KC||L 0-2|
|05/28/2013||3rd||at Orlando City (USL-Pro)||L 1-3|
|06/17/2014||4th||Orlando City (USL-Pro)||W 5-2|
|06/24/2014||5th||Atlanta Silverbacks (NASL)||L 2-1|
^ at Virginia Beach, VA * at Crew Stadium, Columbus, OH + at NAAC, Arvada, CO
|All-Time Colorado Rapids U.S. Open Cup Qualifier Results (4-5-0)|
|05/02/1998||Q *||at Miami Fusion||L 2-3|
|05/23/2007||Q 2||Real Salt Lake||W 2-1|
|05/27/2008||Q 2||at LA Galaxy||W 1-0|
|06/04/2008||Q 3||at Kansas City Wizards||L 2-2 (3-5 pen)|
|04/07/2009||Q 2||at LA Galaxy||W 0-0 (4-2 pen)|
|05/26/2009||Q 3||at Seattle Sounders FC||L 0-1|
|04/13/2010||Q 2||at Kansas City Wizards||W 2-1|
|05/26/2010||Q 3||at NY Red Bulls||L 0-3|
|03/31/2011||Q 2||at Chicago Fire||L 1-2|
*MLS regular season game doubled as Qualifier this year. Rapids home games played at stadium at the time other than 2003. Away stadium in state of opponent unless noted.
All teams MLS unless otherwise noted.