The Drury convention is a bridge convention, used to show a game-invitational major suit raise by a passed hand while guarding against a light opening by partner in third or fourth seat. It is initiated by an artificial and forcing 2 response by the passed hand to a 1 or 1 opening by partner. The 2 bid shows at least three-card support for opener's suit with 10-12 support points and asks opener to clarify the strength of their opening hand. The convention is also known in Europe as "Toronto". Origins and purpose The convention was developed by Canadian Douglas Drury (1914–1967) and his then playing partner Eric Murray (1928–2018) to manage Murray's propensity to open light in third seat. Opening light (i.e. with marginally less than normal values) in the third seat is a common and effective bidding tactic because the player in the fourth seat may well have the best hand at the table and be poised to open the bidding given the opportunity. A third seat light opening, especially in a major suit, will act preemptively to make it harder for that player to enter the bidding. However, it creates two problems: a simple change of suit is no longer a forcing bid, and responding partner, already a passed hand, is unsure if his opening partner has a normal or light opening, and any jump response could get the partnership too high. The traditional way to show good support for opener's suit is to jump to the three-level (e.g. 1 – 3). But if partner has opened light, this may result in an overly ambitious contract, despite the good support. Drury allows responding partner to learn if his opening partner has opened with a normal opening hand or has a light opening hand. If it is a light hand, or even a minimum normal opening hand, the contract can be set at the two-level, whereas non-Drury partnerships, with the same hands, would have to sign off at greater risk at the three-level. Owing to its role in the competitive bidding of part-score contracts, Drury is advantageous primarily in match point scoring events. Opener's rebid Original Drury convention The convention was first published in The Bridge World in January 1957. Murray's presentation of the original convention included the following features: The Drury 2 is an artificial one-round force by a passed hand responding to partner's third or fourth-hand major