The Von Zedtwitz Life Master Pairs national bridge championship is held at the summer American Contract Bridge League (ACBL) North American Bridge Championship (NABC).
Usually called simply the "Life Master Pairs" or "LM Pairs", this is a six-session pairs tournament open to all players without regard to age, sex, nationality, or membership. It is restricted to Life Masters, now a modest career record in ACBL sanctioned play, which leading players from overseas are able to achieve by attending a few NABC meets. If it remains the most prestigious competition for pairs, that may be because it is older than the parallel spring and fall events, the Norman Kay Platinum Pairs established 2010 and Edgar Kaplan Blue Ribbon Pairs established 1963.