North American Bridge Championships

North American Bridge Championships (NABC) are three annual bridge conventions sponsored by the American Contract Bridge League (ACBL). The "Spring", "Summer", and "Fall" NABCs are usually scheduled in March, July, and November for about eleven days. They comprise both championship and side contests of different kinds (e.g. matchpoint pairs and knockout teams, one-day and two-day) in many classes of competition (e.g. open/women/senior or defined by masterpoints). Host cities in the United States and Canada are selected several years in advance.

Awarded to the National Knock-out Team championship winners at the spring North American Bridge Championship (NABC)s. It was donated in 1928 by Harold S. Vanderbilt, who won in 1932 and 1940. The event was contested annually in New York as a separate championship until 1958, when it was incorporated into Spring NABCs.

Awarded to the Master Teams championship winners at the summer North American Bridge Championship (NABC). Knockout Teams have been held since 1930, when players competed for the Asbury Park Trophy. In 1934, 1936 and 1937, there was a separate Masters Teams-of-Four event. The two events were merged in 1938 and renamed Spingold Master Knockout Teams. The trophy was donated by Nathan Spingold in 1934. Since 2001, there has also been a Mini-Spingold I (0-5000), restricted to those with less than 5,000 masterpoints, and a Mini-Spingold II (0-1500) ("Micro-Spingold") restricted to those with less than 1,500 masterpoints.

Awarded to the Open Board-a-Match Teams winners at the fall North American Bridge Championship (NABC), it was donated by the Greater New York Bridge Association in 1965 in memory of Curt H. Reisinger, a great benefactor and official of the ACBL, and replaced the Chicago Trophy. Reisinger teams is the only major team competition with board-a-match scoring. It is an open team event scored with two qualifying sessions, two semifinal sessions and two final sessions

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