• BakerBridge
• CONVENTIONS
• Takeout Double
• Blackwood
• Weak 2-Bid
• Strong 2-Club
• Stayman
• Negative Double
• Reverse Bid
• Gerber
• Jacoby Transfer
• Weak Jump Overcall
• Michaels Cue Bid
• Unusual Notrump
• Support Cue-bid
• Weak Jump Shift
• Help Suit Game Try
• Jacoby 2NT
• Splinter Bid
• RKC Blackwood
• Fourth Suit Forcing
• New Minor Forcing
• D.O.N.T.
• Reverse Drury
• Lebensohl
• 2 / 1 Game Force

Perhaps this should be called an Agreement, rather than a Convention.

Historically, when Partner Opened 1 of a suit you showed a strong hand by jumping in a new suit. This was called a Jump Shift and it typically promised 17 or more points. This was the agreement even if there was an intervening Overcall by the opponents.

But if Partner has Opened, and the next player has enough strength to Overcall, it is a rare day when you will have a hand strong enough for this type of jump shift.

Many players today therefore use the jump-in-a-new-suit after an Overcall as a Weak Jump Overcall, showing a 6-card suit, weak hand, and probably no support for Opener's suit. It is nothing more than a type of preemptive action.

No BakerBridge lesson.