The World IMP Pairs Championship is a contract bridge competition established in 1998 by the World Bridge Federation. Since then it has been a major side event in the quadrennial meet that is now called the "World Bridge Series Championships", "World Bridge Series", or "World Series".
It is open to all players without preregistration and about 15% of the pairs were transnational in the 2010 rendition.
World championship status of the IMP Pairs may be doubted or tentative for it is not explicitly listed as one of the constituent World Bridge Series Championships (nor directly listed in the side menu).[1]