Drury
A 2♣ inquiry by a passed hand to check whether partner's 3rd/4th seat major opening is full-value.
What Is Drury?
Origin and Purpose
Drury is a convention named after Douglas Drury, a Canadian bridge player who introduced it in the 1960s. It addresses a practical and common problem: in third or fourth seat, a partner who has already heard two passes may open 1♥ or 1♠ on a sub-standard hand — perhaps 10–11 HCP with a good 5-card major — because the opponents may not have values for game and a light opening can be tactically worthwhile. This is entirely normal bridge. The danger arises when you, the second passed hand, hold a maximum pass (10–11 HCP) with 3-card support. Without Drury, you face an uncomfortable choice: raise to the 2-level and risk being passed in a thin contract, or try for game and push too high if opener is sub-minimum. The combined count of 20–22 HCP is dangerously close to game but often just short.
The Drury Mechanism
Drury solves this by converting 2♣ into an artificial inquiry. After partner opens 1♥ or 1♠ in third or fourth seat, a 2♣ bid by the passed hand does not show clubs — it says: "I have a maximum passed hand with support for your major. Are you full value?" This puts opener in the captain's seat. A "full value" opening (the standard is typically 13+ HCP or a very sound 12) gets a positive response, and the partnership proceeds toward game. A sub-minimum opening (10–11 HCP, opened light for tactical reasons) gets a negative response that keeps the auction at the 2-level, preventing the partnership from overreaching.
Regular vs. Reverse Drury
Two versions exist and it is critical to agree which one you play. In Regular Drury (the original version), opener's 2♦ rebid over 2♣ is the negative — it means "I'm sub-minimum, let's sign off." Any other rebid shows a full-value hand. In Reverse Drury (now more widely played), the meanings are reversed: opener's 2♦ over 2♣ shows a full-value hand (often suggesting a game try), while a rebid of 2 of the original major (2♥ or 2♠) is the sign-off showing a sub-minimum opening. Reverse Drury has become more popular because it keeps the auction lower when opener is sub-minimum and uses 2♦ — a forward-going bid — to show strength.
Two-Way Drury
Some partnerships extend the concept to Two-Way Drury: 2♣ shows 3-card support and 2♦ shows 4-card support, both promising maximum passed-hand values (10–11 HCP). This lets opener know not just the strength of responder's hand but also the exact length of the trump fit — information that can be critical for game acceptance decisions. Like any Drury variant, Two-Way Drury must be explicitly agreed and noted on the convention card. Regardless of which version is played, Drury applies only in uncontested auctions — any opponent action turns Drury off.
Core Rules
When Drury Applies
Drury is on when: (1) you are a passed hand; (2) partner opens 1♥ or 1♠ in third or fourth seat; (3) the auction is uncontested (no opponent bid or double).
| Responder's Bid | Meaning | Support | HCP |
|---|---|---|---|
| 2♣ (Drury) | Artificial — maximum passed hand with support. "Are you full value?" | 3+ card support | 10–11 HCP |
| 2♦ (Two-Way Drury) | Artificial — maximum passed hand with 4-card support (if playing 2-way) | 4-card support | 10–11 HCP |
| 2♥ / 2♠ | Simple raise — not maximum, or less than 3-card support | 3+ card support | 6–9 HCP |
Opener's Rebids After 2♣ Drury — Reverse Drury (Common)
| Opener's Rebid | Meaning |
|---|---|
| 2♦ | Full value (13+ HCP) — positive response, game possible. Forward-going. |
| 2♥ / 2♠ (own suit) | Sub-minimum (10–11 HCP) — sign off. "I opened light, let's stop here." |
| 3♥ / 3♠ | Full value with game interest — strong hand, inviting game |
| 4♥ / 4♠ | Full value, bidding game directly |
| 2NT | Full value, balanced, game interest |
| 3♣ / 3♦ | Full value, showing a side suit feature |
Opener's Rebids After 2♣ Drury — Regular Drury (Original)
| Opener's Rebid | Meaning |
|---|---|
| 2♦ | Negative / sub-minimum — "I opened light. Sign off in the major." |
| 2♥ / 2♠ (own suit) | Full value — confirms the opening |
| Anything else | Full value — natural and forward-going |
Two-Way Drury Response Schedule
| Bid | Meaning |
|---|---|
| 2♣ (Two-Way) | 3-card support, maximum passed hand (10–11 HCP) |
| 2♦ (Two-Way) | 4-card support, maximum passed hand (10–11 HCP) |
Decision Tree
Two trees: the first guides responder (the passed hand), the second guides opener after the Drury bid. Click each node to expand.
Tree 1: Passed-Hand Responder After Partner Opens 1♠ in 3rd/4th Seat
Tree 2: Opener's Decision After 2♣ Drury (Reverse Drury)
After (P) – 1♠ – (P) – 2♣* – (P), you are opener:
Quiz
Test your Drury knowledge. Click an option to reveal the answer and explanation.
11 HCP — 3-card spade support, maximum passed hand
10 HCP — sub-minimum opening, opened light in 3rd seat
16 HCP — full value, strong opening
Hand Examples
Example 1: Drury Saves a Game — Opener Is Sub-Minimum
The auction: (P) – 1♠ – (P) – 2♣* – (P) – 2♠** – All Pass
*Drury. **Reverse Drury sign-off (sub-minimum opening).
Auction explained: South had 14 HCP but passed originally (perhaps a 1st/2nd seat marginal pass with balanced shape and no 5-card suit). Now, with North's 1♠ in 3rd seat and South's 3-card spade support plus maximum values, South bids 2♣ Drury. North rebids 2♠ (Reverse Drury sign-off) — 11 HCP, sub-minimum. South correctly passes 2♠. 4♠ would be a bad contract on only 22 HCP. The Drury mechanism saves the partnership from getting to a failing game.
Example 2: Drury Helps Reach Game — Opener Is Full Value
The auction: (P) – 1♥ – (P) – 2♣* – (P) – 2♦** – (P) – 4♥ – All Pass
*Drury. **Reverse Drury positive (full-value opening).
Auction explained: North opens 1♥ in 4th seat with a genuine full-value 15 HCP hand. South, a passed hand with 11 HCP and 3-card heart support, bids 2♣ Drury. North's 2♦ (Reverse Drury) confirms full value. Now South knows: opener has a real opening bid, combined count is 26 HCP with a good heart fit. South bids 4♥. The game is cold — AQ in hearts, plus all the outside controls mean 4♥ makes easily. Without Drury, South might have only bid 2♥ (too conservative) or jumped to game on pure guesswork.
Common Partnership Misunderstandings
1. "We Hadn't Agreed Which Version of Drury to Play"
You bid 2♣ Drury. Partner has a sub-minimum hand. Playing Regular Drury, the sign-off is 2♦. But partner is playing Reverse Drury and rebids 2♦ thinking it means "full value." You now take a game try based on false information — and end up in a failing contract. This is the single most common Drury disaster.
Fix: Agree explicitly before every session: "Regular Drury (2♦ = negative/sign-off) or Reverse Drury (2♦ = positive/full-value, 2♥/2♠ = sign-off)?" Write the agreed version on the convention card. Reverse Drury is the modern standard and recommended for new partnerships.
2. "I Used Drury in 1st or 2nd Seat"
A player bids 2♣ Drury after partner's 1♠ opening in first seat. But Drury only applies when the 2♣ bidder is a passed hand — someone who passed in first or second seat. In first or second seat, 1♠ is presumed to be a full-value opening, so there's nothing to ask. A 2♣ bid in that position shows clubs naturally or is the beginning of a 2♣ forcing auction depending on the system.
Fix: Drury requires two conditions: (a) YOU are a passed hand, AND (b) partner opened in 3rd or 4th seat. If either condition is missing, Drury is not applicable. In 1st/2nd seat, use standard forcing responses (2♣ natural or game-forcing depending on your system).
3. "Partner Forgot 2♣ Was Drury and Treated It as Natural Clubs"
You bid 2♣ Drury and partner, unfamiliar with the convention or momentarily forgetting, responds to your "club suit." They might bid 2♦ as a preference (trying to help you find the minor), or 3♣ as a raise. The auction becomes a comedy of errors because the two players are having completely different conversations.
Fix: This is an alerting and preparation issue. The 2♣ Drury bid must be alerted by opener's partner (or announced by responder in some jurisdictions). Before play, run through the convention verbally: "After you open 1♥ or 1♠ in 3rd/4th seat and I have passed, my 2♣ is Drury — not clubs." Consistent pre-game review prevents in-session surprises.
Practice Sequences
6 complete sequences covering the main Drury situations and variations.
| West | North | East | South |
|---|---|---|---|
| P | P | P | 1♠ |
| P | 2♣* | P | 2♠** |
| P | P | ||
| *Drury (max passed hand, spade support). **Reverse Drury sign-off — South opened light (10–11 HCP). North passes 2♠. | |||
| West | North | East | South |
|---|---|---|---|
| P | P | P | 1♥ |
| P | 2♣* | P | 2♦** |
| P | 4♥ | P | P |
| *Drury. **Reverse Drury positive (full-value opening). North has enough to bid game directly — 4♥. All pass. | |||
| West | North | East | South |
|---|---|---|---|
| P | P | P | 1♠ |
| P | 2♦* | P | 4♠ |
| P | P | ||
| *Two-Way Drury — 4-card spade support, max passed hand. South has full 14 HCP and bids game knowing the 9-card fit exists. | |||
| West | North | East | South |
|---|---|---|---|
| P | P | P | 1♥ |
| P | 2♣* | P | 2♦** |
| P | 2♥ | P | P |
| *Drury. **Regular Drury negative — sub-minimum opening. North bids 2♥ (sign off) and all pass. (Compare Sequence 2 — same 2♦ bid, opposite meaning in Reverse Drury.) | |||
| West | North | East | South |
|---|---|---|---|
| P | P | P | 1♠ |
| 2♥ | 3♠* | P | 4♠ |
| P | P | ||
| After West's 2♥ overcall, Drury is off. North makes a competitive 3♠ raise (natural). South with full values bids game. | |||
| West | North | East | South |
|---|---|---|---|
| P | P | P | 1♠ |
| P | 2♣* | P | 2♦** |
| P | 3♠ | P | 4NT |
| P | 5♣ | P | 6♠ |
| P | P | ||
| *Drury. **Full value. North raises to 3♠ (game interest). South with 17 HCP probes with 4NT (RKCB). 5♣ shows 0 or 3 keycards — slam bid. | |||
Expert Mistakes
Even experienced players using Drury encounter these pitfalls. Awareness is the best prevention.
Mistake 1: Not Agreeing Regular vs. Reverse Drury Before the Session
Two experienced players sit together. Both know Drury but have played different versions throughout their careers. One plays Regular; the other plays Reverse. Neither checks before play. On the second board of the session, the sign-off bid (2♦ in one version, 2♥/2♠ in the other) is misread as a positive response. A bad game goes minus three, a top to the opponents.
Mistake 2: Using Drury With Only 2-Card Support
A passed hand with 10 HCP and ♠Kx (2-card support) bids 2♣ Drury, figuring the king is "good enough." Opener treats it as 3-card support and bids game expecting a decent trump fit. The 7-card fit proves fragile — trump control is lost early and game fails on a ruff.
Mistake 3: Failure to Alert Drury Properly at the Table
Responder bids 2♣ without alerting. The opponents, thinking it shows clubs, make poor decisions based on the incorrect information. When the Drury misunderstanding comes to light, it can result in a director call, adjusted scores, and frustration for everyone. Failure to alert a conventional bid is an ACBL rules violation.
Convention Card
How to document Drury on your ACBL convention card, in the "Passed Hand" and "Slam/Game Conventions" sections.