The first season of Robot Wars Extreme Warriors (The New TNN network) filmed U.S. competitors in England in June/July, 2001. At the last minute, TNN programming people decided to shrink the entire 24 robot main tournament to a single one-hour show. To accomodate this, the first round format was crushed into four, six-robot melees with only one robot advancing!
Other shows in the series featured a House Robot Challenge, The Annihilator, The American Civil War (North vs. South), Tag Team Terror, The War of Independence (US vs. UK), and the Robot Wars World Championship.
Full summaries of each show in this series may be found at: TV Tome: RWEW Season 1.