Technical Flaws of 5-Card Major Systems – Part 1

Ron Sutton • July 11, 2026

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July 11, 2026

by Ron Sutton

The decision to open or not open a major at the 1-level is very straightforward. The real decisions come from the responding hand. Let’s examine the most common situations: minimal and invitational responding hands; those with 6–12 high-card points (HCP) and 3-card or fewer support for the opening bid. Both Standard American (SA) and 2/1 Game Force have distinct issues bidding these hands.

We need to modernize our responses to a 1-major opening. Our treatment is called Modern American Majors, or simply Modern Majors (MM). We break our discussion into four distinct hand types based on two criteria:

Minimal values (6–9 HCP) vs. Game Invitational values (11–12 HCP)
3-card support for opener’s major vs. No support (fewer than 3 cards)

Following these four primary types, we will discuss a fifth critical hand category: hands with game-forcing values (13+ HCP) and no support for the opener’s major suit.

Note: Responding hands with 4-card or longer support can be managed with other conventions.

Single Raises

Single or simple raises of a major show 6–9 HCP and exactly 3-card support. Strictly limiting our single raises to this definition means saying goodbye to both the Forcing 1NT and Constructive Raises.

The Constructive Raise in 2/1 defines the single raise to promise at least an honor card alongside the 3-card support. Hands with three small cards of trump support were forced to go through a forcing 1NT first, only to settle into a rebid of the major later. This treatment was a double-edged sword. If the opponents competed directly after the forcing 1NT bid, the partnership faced incredibly difficult competitive bidding decisions. Overall, in our experience, you will not miss this complicated twist on simple raises.

Why Abandon Standard American New Suit Responses?

We dislike the bidding uncertainty inherent in all natural 2-level responses in Standard American. The exceptionally wide point range makes subsequent bidding difficult. The complete lack of an immediate game-force mechanism is the exact reason 2/1 has been so widely accepted. The 2/1 solution fixes this, but it does so at a heavy expense: requiring the clumsy forcing 1NT bid.

Why Abandon the Forcing 1NT?

We have abandoned the Forcing NT—which forces you to bid 1NT with any ambiguous 6–12 HCP hand regardless of support—in favor of a disciplined bid showing only minimal 6–9 HCP and denying 3-card support.

The single best feature of Standard American is the non-forcing ability to pass and stop at a contract of 1NT. If you have been playing 1NT as non-forcing, you do not have to relearn anything to adopt Modern American Majors. If you have been playing Forcing 1NT, you will greatly appreciate “saying goodbye” to this catch-all bid that lumps a massive variety of responder hands together.

Playing a semi-forcing 1NT—sometimes referred to as FEFMO—doesn’t solve the core issue: it still suffers from the wide, ambiguous 6–12 HCP range. It only outperforms a forcing 1NT when the opener holds a flat, minimum opening hand and responder has a weak, balanced hand without a fit. It fails significantly when the responder holds a limit-raise hand where playing 3 of the major easily outscores 1NT.

The Hidden Benefits of the Non-Forcing 1NT

Another benefit of the non-forcing 1NT is creating a distinct lead bias. When defending against 1NT contracts, most defenders will ultimately choose to make an aggressive opening lead. Conversely, against a 2-level suit contract, they tend to lead passively. This tendency heavily favors the declarer. Defenders simply are not used to auctions that proceed 1M – 1NT and pass out.

The more focused, narrow meaning of our 1NT response makes rebids by the opener both easier and highly scientific. 1NT can be (and frequently is) the best-scoring low-level, part-score contract available. When 1NT is forcing, the auction is regularly tilted toward settling into an inferior 5-2 major suit fit at the 2-level.

Analyzing hundreds of deals, we have found that roughly 65% of the time, 1NT plays and scores better than a 5-2 fit. Generally, a 5-2 fit is only successful when the declarer can use one of the doubleton trumps for a ruff, or when the opponents happen to have a very long, running suit in no-trump. The latter case is frustrating when it happens, but if the opponents possess a running suit that long, why aren’t they playing in it themselves? Giving up -50 or -100 in a 1NT contract still regularly outscores the opponents scoring +110 or +140 in their own suit contract.

The Golden Rule: A 1NT response over a 1-Major opening is strictly non-forcing, showing 6–9 HCP and denying 3-card support.

This puts the opener in an excellent position to evaluate their hand. With tolerance for no-trump and fewer than 16 HCP, the opener can easily decide to pass and play 1NT. If the opener has a highly distributional hand undesirable for no-trump, or holds 16+ HCP, they can safely bid again.

Why Abandon 2/1 Game Forcing?

We highly value the game-force concept of 2/1 bidding. When transitioning from Standard American, 2/1 logically increases the requirement of 2-level responses to guarantee a game-forcing hand. However, we question why a system needs so many separate game-force bids.

After a 1♠ opening, 2/1 uses three separate bids (2♣, 2♦, and 2♥) simply to declare that the auction will not stop until reaching game; opening 1♥ uses two (2♣ and 2♦). Dedicating so many bidding slots to communicate the exact same strength is entirely superfluous. If you consider 2NT (whether played as a Jacoby Strong Raise or an older Baron Game Raise showing 15+ HCP without support) as an additional game-forcing bid, the overlap is even more apparent.

The game force is a critical tool, but we only require one primary bid to show 13+ HCP and establish a game-forcing auction. In Modern Majors, bidding 2♦ over a major suit opening is an artificial, catch-all game force. This covers all standard scenarios where the responder has 13+ HCP opposite an opening hand.

By consolidating this strength into a single bid, we free up the remaining 2-level responses to describe completely different hand types, exchanging far more useful distributional information. Specifically, we use them to explore for accurate, lower-level contracts.