How to Handle Opener's Rebid After a 1-Over-1 Response
Partner answered your 1-level opening with a 1-level response. Here is how opener categorises their point range and shape.
After responder makes a 1-over-1 response (such as 1♦ – 1♠), opener's rebid categorises their hand into three distinct point ranges: Minimum (12–15 High Card Points), Medium (16–18 HCP), or Maximum (19–21 HCP). High Card Points (HCP) rate hand strength by assigning 4 points to an Ace, 3 to a King, 2 to a Queen, and 1 to a Jack. With a minimum hand, make a non-jump rebid at the lowest available level; with a medium hand, make a jump rebid or reverse; with a maximum hand, jump straight to game or jump shift into a new suit.
Why opener's rebid categories work
Responder's 1-level bid is wide open, promising anywhere from 6 to 18+ HCP. Responder cannot calculate the partnership's final contract until opener clarifies their point range and hand shape.
Opener's rebid acts as a sorting mechanism. By keeping bids at the lowest level with 12–15 HCP, opener signals that responder must hold 10+ HCP to pursue game. Jumping a level with 16+ HCP tells responder that game is likely even if responder holds a bare 6–8 HCP minimum.
A worked example: Rebidding with a minimum major fit
You open the bidding in first seat.
Your Hand (Opener - South):
♠ K Q 8 2
♥ A 4
♦ A J 9 7 2
♣ 8 3
(15 HCP, 5 Diamonds and 4 Spades)
The Auction:
- You (South): 1♦
- West (Opponent): Pass
- Partner (North): 1♠
- East (Opponent): Pass
- You (South): 2♠
- All Pass
*Caption:* Open 1♦. Partner responds 1♠. Holding 15 HCP and 4-card Spade support, rebid 2♠. This simple 2-level raise shows 12–15 HCP with 4 Spades, describing your minimum opening strength accurately.
Four common mistakes
- Jumping to the 3-level on a rebid with only 12–14 HCP (this forces the partnership into unsafe contracts).
- Repeating a 5-card suit on your rebid instead of rebidding 1NT on a balanced 12–14 HCP hand.
- Failing to raise partner's 4-card major suit when holding 4-card support.
- Passing responder's 1-over-1 response (responder's bid is 100% forcing for one round).
When the rule does not apply
If responder bids a 2-over-1 response (e.g., 1♠ – 2♣), responder promises 10+ HCP (or game forcing values in modern systems). Opener does not need to jump to show medium values because a game-seeking auction is already established.
Key takeaways
- Minimum (12–15 HCP) = Non-jump rebid at the lowest level.
- Medium (16–18 HCP) = Jump rebid or Reverse.
- Maximum (19–21 HCP) = Jump shift or jump to game.
- Never pass partner's 1-over-1 response.