Year | City | Number of teams | Winners | Runners-up |
2001 |
Toronto |
72 |
Brian Johnston, John Lloyd, Bill Woodcock, Gary Whiteman, Brooke Nelles, Dale Freeman |
Howard Gianera, Barry Purrington, Vernon Evans, Monte Evans, John Koch, Tony Ames |
2002 |
Washington |
63 |
Howard Einberg, Michael Mikyska, Alan Myerson, Jim Glickman, David Sokolow |
John Hodges, Lynn Johannesen, Dale Johannesen, Franklin Lowenthal |
2003 |
Long Beach |
41 |
Barbara Wallace, Mark Yaeger, Lisa Kow, Rich Pavlicek Jr., Brian Gunnell |
Marjorie Michelin, David Anding, Kenneth Titow, Ed Ulman, Andrew Vinock |
2004 |
New York |
40 |
Larry Mohr, Alex Hong, Shi Yan, Hao Ge, Yi Liu |
Keith Connolly, Andrew de Sosa, Bob Rebelein, Morrie Kleinplatz |
2005 |
Atlanta |
51 |
Walt Murphy, Julie Murphy, Steve DeVico, Gayle Covey, Elliott Grubman, Ava Grubman |
Richard Wegman, Arnold Malasky, Gloria Silverman Bart, Jim Russell |
2006 |
Chicago |
51 |
Martin Harris, Jacob Morgan, Jim Melville, Will Engel |
Paul Stern, Daniel Levin, James O’Neil, Christopher Mansour |
2007 |
Nashville |
61 |
Brian Alexander, Karl Hicks, Jim Gordon, Mike Betts |
Randy Okubo, Nathan Glasser, Bud Biswas, Susan Winkler |
2008 |
Las Vegas |
99 |
Joyce Hampton, Lukasz Lebioda, Jon Rice, Mike Rice, David Grainger |
Warren Cederborg, Greg Michaels, Dayou Zhou, Stephen Tu |
2009 |
Washington |
59 |
Jay Whipple III, Kevin Dwyer, Owen Lien, Jon Rice, David Grainger |
McKenzie Myers, Garth Yettick, Peggy Ware, Spencer Jones, Jon Brandon, Michael Sherman |
2010 |
New Orleans |
38 |
Morrie Kleinplatz, Mark Leonard, Robert Stayman, John Boyer |
Jim Russell, Nancy Spear, Mark Jones, Stephen Stewart |
2011 |
Toronto |
62 |
John Lewis, David Sokolow, Howard Einberg, Maris Zilant, Susan Fuller, Saul Gross |
Gary Donner, Deborah Murphy, Lauren Friedman, Larry Lerner |
2012 |
Philadelphia |
38 |
Yan Wang, Edward Xu, Peter Wong, Jianfeng Luo, Nongyu Li |
George Krizel, Albert Shekhter, Oleg Rubinchik, Igor Milman |
2013 |
Atlanta |
29 |
Max Aeschbacher, Josh Parks, Arjun Dhir, Alex Dezieck |
Randall Rubenstein, Marc Sylvester, Bill Begert, Doug Herron, Lorraine Cable, Doug Anderson |
2014 |
Las Vegas |
51 |
Mark Friedlander, Richard Fellars, Howard Engle, Mark Weisman |
Wenbo Zhang, Jiawei Luo, Robert Hou, Yuan Chen[1] |
2015 |
Chicago |
47 |
Steve Zolotow, Anam Tebha, Christian Jolly, Oren Kriegel, Sean Gannon |
Jonathan Fleischmann, Xu Wang, Brad Dracka, Jin Hu, Jordan Kaye[2] |
2016 |
Washington |
52 |
Edmund Wu, Jesse Chao, Alex Dezieck, Zhuo Wang |
Robert Bernstein, Jay Barron, Doris Van Delft, Merel Bruijnsteen[3] |
2017 |
Toronto |
|
John McWhinnie, Henry Caspar, Debbie Feldman, Doug Barnes, Terry Richardson, Christopher Cowan |
Brad Bart, Detlef Ladewig, Terrence Rego, Andy Stark |
2018 |
Atlanta |
|
Neil Stern, James Weeks, Dorn Bishop, Jim Johnsen |
David Shepler, Marsha Platnick, Brad Vander Zanden, Keith Hungate |
2019 |
Las Vegas |
|
Greg Michaels, Martin Harris, John Botzum, Miriam Harris-Botzum |
Arti Bhargava, Ingi Agnarsson, Gudjon Sigurjonsson, Mark Leonard |
2021 |
Online (Summer) |
|
Eric Gettleman, Paul Holmes, Richard Franklin, David Venetianer, A.J. Stephani, Isaac Stephani |
Charles Nemes, Edward Maier, David Bogolub, Rick Schoenfield |
2022 |
Providence |
|
Leon Yu, Winston Huang, Tsao-Tung Tsai, Bing Le |
David Yoon, Lorraine Cable, Jordan, Lampe, Jacqueline Chang |