When to Return Partner's Opening Lead

One of the most comforting rules for a defender is: "Return partner's lead." When partner makes the opening lead, they are usually attacking their longest or strongest suit. If you win a trick later in the hand, leading that suit back to them is usually the fastest way to establish their winners and defeat the contract.

Why returning the lead works

Defense requires partnership trust. If partner leads the ♠4 against 3NT, they are likely holding a 4- or 5-card Spade suit headed by honours. If you win the ♦A at Trick 3, your job is not to suddenly start playing your own mediocre Club suit. Your job is to return a Spade to knock out declarer's remaining stoppers so partner can cash their established winners.

When returning partner's suit, remember the rule of Present Count: lead back the highest card from your remaining holding in that suit. If you hold ♠8-2 remaining, lead the 8. If you hold ♠J-8-2, lead the 2.

A worked example: Clearing partner's suit

Defending 3NT. Partner (West) leads the ♠5.

Dummy (North):

♠ 7 3

You (East):

♠ A 8 2

Play of Trick 1 & 2:

You win Trick 1 with the ♠A. Declarer drops the ♠Q.

Caption: You have the lead. Partner led a low Spade, promising an honour (almost certainly the ♠K, since you hold the Ace and declarer played the Queen). You must return a Spade immediately to establish partner's suit! Because you have exactly two Spades left (the 8 and the 2), you return the higher one—the ♠8.

Four common mistakes

• Selfishly abandoning partner's good suit to try and establish your own weak 4-card suit.
• Returning partner's suit when dummy has a singleton and declarer is clearly going to ruff it (in a suit contract).
• Failing to play the correct card when returning the suit (lead high from two remaining cards, low from three).
• Continuing partner's suit when partner's opening lead was obviously passive (like top of a doubleton) and not an attacking sequence.

When the rule does not apply

You should absolutely NOT return partner's lead if the dummy makes it clear that continuing the suit is futile or dangerous. For example, if partner leads a Heart, and dummy hits the table with ♥A-K-Q, returning a Heart is pointless. You must switch to a more promising suit.

Key takeaways

• Trust partner's opening lead decision.
• Returning their suit is usually the fastest way to set up winners.
• When returning the suit, play high from two remaining cards, low from three.
• Only switch suits if dummy reveals that continuing is a lost cause.