Leading Partner's Suit vs Your Own

When deciding the opening lead, the eternal dilemma is whether to lead partner's suit or your own. The golden rule of bridge defense is: When in doubt, lead the suit your partner bid. Abandoning partner's suit requires a spectacular reason.

Why leading partner's suit works

Bridge is a partnership game. If partner overcalled 1♠, they promised a 5-card suit with honour strength. If you lead your own mediocre 4-card suit instead, you give declarer a tempo advantage and infuriate your partner.

Even if you only hold a singleton or doubleton in partner's suit, leading it helps set up their winners or secures you a ruff.

A worked example: Trusting partner

Partner overcalls 1♥. You hold ♠K-Q-J-9 and ♥5-2.

Caption: You have an amazing Spade suit! But you must lead the ♥5. Partner might hold ♥A-K-10-8-3. If you lead a Spade, declarer wins the ♠A, draws trumps, and discards their Heart losers. Leading partner's Heart suit immediately establishes their tricks before declarer can react.

Four common mistakes

• Leading your own 5-card suit headed by the Jack instead of partner's known strong suit.
• Failing to lead partner's suit because you hold a singleton in it (a singleton is the best reason to lead it!).
• Leading partner's suit when you have a 100% solid sequence (A-K-Q) in an unbid suit that you can cash immediately.
• Playing the wrong card in partner's suit (lead high from a doubleton, low from 3+ cards).

When the rule does not apply

If you hold a sequence like A-K-Q in a side suit, cash the King first to look at dummy before switching to partner's suit. Also, do not lead partner's suit if the auction strongly suggests declarer is void in it.

Key takeaways

• Leading partner's suit is correct 90% of the time.
• Respect partner's overcalls and preempts.
• Lead high from a doubleton in partner's suit.
• Only lead your own suit if it guarantees immediate tricks.