When Should You Lead Partner's Suit?
Partner bid a suit during the auction? Lead it on Trick 1 to set up tricks early before declarer draws trumps.
When partner bids a suit naturally during the auction, your standard opening lead on Trick 1 is to lead partner's suit. Lead the top card from a doubleton (such as 8-2 or J-4), or lead low from three or more cards headed by an honour card (like the 3 from K-8-3). Leading partner's suit respects their bidding description and sets up defensive tricks before declarer draws trumps.
Why leading partner's suit works on defense
Partner bid their suit because they hold high-card honours or length in that suit. Opening leads are the primary opportunity for defenders to establish trick-taking positions.
If you ignore partner's suit to lead your own weak suit, you waste partner's high cards and give declarer time to draw trumps. Leading partner's suit allows partner to win tricks early or build length winners that defeat the contract.
A worked example: Supporting partner's Heart lead
Partner opens 1♥ during the auction, but opponents win the final contract in 4♠.
Your Hand (West):
♠ 8 5 2
♥ 9 4 2
♦ Q 10 3
♣ J 7 4 2
Play of the Trick:
Select partner's Hearts as your opening lead and play the ♥9.
*Caption:* Lead the ♥9 (top of a worthless three-card suit) to partner's Hearts. Partner holds ♥A K J 8 3 and wins the first three Heart tricks immediately, defeating South's 4♠ contract before declarer can win the lead.
Four common mistakes
- Ignoring partner's bid suit to lead a weak four-card suit of your own.
- Leading low from a doubleton in partner's suit (always lead HIGH from a doubleton, e.g., lead the 8 from 8-2).
- Underleading an Ace in partner's suit against a suit contract.
- Leading partner's suit when you hold a singleton in another suit and want to ruff.
When the rule does not apply
Do not lead partner's suit if you hold a singleton in another suit and hold trumps to ruff, or if you hold a solid touching honour sequence (such as K-Q-J or Q-J-10) in your own suit.
Key takeaways
- Lead partner's bid suit on Trick 1 as your default opening lead.
- Lead top from doubletons, low from 3+ cards headed by an honour.
- Builds immediate defensive trust and sets up partner's winners.
- Avoid leading low from doubletons in partner's suit.