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The Grand National Teams (GNT) national bridge championship is held at the summer American Contract Bridge League (ACBL) North American Bridge Championship (NABC). The Grand National Teams is a team knockout event. The event is broken into four flights (Championship, A, B, C). The event is restricted to those who have qualified in their local ACBL district. No player on a flight A team can have more than 6,000 masterpoints. No player on a flight B team can have more than 2,500 masterpoints. No player on a flight C team can have more than 500 masterpoints, or be a Life Master (which requires only 300 masterpoints). All flights typically begin play on Wednesday, two days before the main NABC events. The 2011 host district won Flights B and C in Toronto and thereby won the unofficial GNT Cup.〔 ==History== The United States Bridge Association, established by Ely Culbertson and his staff, conducted a Grand National Team-of-Four championship from 1934 to 1937 (the lifetime of the organization before merger created the ACBL). The extended, grass-roots tournament was re-established in 1973, when about 1500 teams participated.〔"Grand National Teams". 〕 Initial stages were contested in the 25 geographically defined ACBL Districts. Champions of eight Zones were determined in a semifinal stage, who qualified for the final stage at one of the North American NABC meets.〔 By 1980 there were 6032 teams in the first stage, although the distinct Canadian National Teams championship was introduced by the Canadian Bridge Federation that year, leaving only the 23 U.S. or partly U.S. districts in the GNT.〔 (The ACBL encompasses Mexico and Bermuda, but each is entirely within a partly U.S. District.) The Zonal stage was eliminated in 1985; since then every District champion qualifies for the final at the Summer NABC.〔 Conditions within the Districts differ; some now hold a single weekend tournament. Winners received some money to pay expenses in part. Also in 1985, the event was divided in three Flights called A, B, and C. The Championship Flight was added in 2001. That is, Flights B and C were added to the Open Flight in 1985, with player eligibility restricted by upper limits on career masterpoints. In 2001 the previously Flight A was renamed "Championship" or "Superflight" and Flight A was restricted to players with fewer than 5,000 career masterpoints. As of 2012 the other ceilings were 2,000 points for Flight B players and 500 points for Flight C. In 2014 the cutoff for Flight A was raised to 6,000 masterpoints and the cutoff for Flight B was raised to 2,500 masterpoints. The Open winners have their names engraved on the Morehead Trophy, donated by ''The New York Times'' in memory of its longtime bridge editor Albert H. Morehead. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Grand National Teams」の詳細全文を読む スポンサード リンク
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