Here are some of the most common bridge bidding mistakes.

Watching online bridge has allowed me to see some of the most common bidding errors.
Responding to 1 of a suit with 1NT (6-9pts) rather than 1 of a suit
Not supporting your partner’s overcall with 3 trumps
Overcalling with a 4 card suit
Not jumping with 9+ points in response to a takeout double
Not doubling when the opponents are sacrificing against you
Opening with a weak Two, with a 7-card suit.
Raising your own pre-empt
Raising your partner’s minor when you have a 4-card major you could bid
The links to the hands are:
Responding 1NT when you could bid your own suit:
• tinyurl.com/24... Responding 1NT to 1H, tinyurl.com/28... when you should bid 1S.
• Even if you bid 1S, if there is no fit, you may end up in 1NT either way tinyurl.com/28...
Overcalling a 4-card suit
• East cannot overcall, and NS may end in 1NT, or 2D tinyurl.com/29... POLL EAST’s BID 1NT could be defeated. This hand was actually played in spades, which did not go well tinyurl.com/29... Board 13 from www.bridgewebs...
Raising partner’s minor rather than bidding a major
• tinyurl.com/2p... played in 3D POLL NORTH’S BID
• Rather than 4S tinyurl.com/2p...
• tinyurl.com/2y... or if there is not fit. Could lead to 3NT +1 (430), better and easier than 5D+1 (420) tinyurl.com/2c...
Preempting with a Weak 2 with a 7 card suit
• Should open 3H tinyurl.com/2a... - down 2, perhaps
• But if you open 2H, the opps will find their spade sit 4S +1 tinyurl.com/26...
If you open 2H you should let NS play 2S
• Could go down tinyurl.com/25...
• Do not be tempted to raise your pre-empt tinyurl.com/2y...

[@vikramgokhale7302]

Very nice to see these videos. The polls are also informative: gives an idea how various people come to very different conclusions, even about the same issue. 🤔

[@TonyStawBridgeClass]

Glad you like them!

[@helenjenkinson4294]

Thank you Tony I enjoyed this video. At 3min 40 approx you mention, as responder, never bypassing a 4 card major. At 9.35 you mention 'as dealer you'd have opened 1NT' . So, is it ok to bypass the 4 card majors as declarer, (bidding a 1NT) but not as responder. Very helpful lesson, much appreciate it.

[@guyredares]

very useful video! please make videos about common mistakes in playing the hand and defending!

[@TonyStawBridgeClass]

Many thanks for your comments. Yes, I will be making videos on mistakes in declarer play and mistakes in defence.

[@paulhadlington8179]

A mistake I regularly see is .. Pre-empting with a hand that is too strong. ie, 7 card suit with 12+ HCP

[@prakashsardar7942]

Brilliant lesson, Thanks a lot!

[@archiewoosung5062]

In that first deal, isn't it a general rule not to let you opponents play at the two level if they've found a fit...so should E/W have doubled?

[@TonyStawBridgeClass]

Yes in general, it’s a bad idea to let the opponents play at the two level. On this hand West is in the passout seat and might decide to bid 3D although you only have five points so it is a bit scary. That would probably push the opponents to 3 spades. I think 3D might be defeated by two tricks so would be a bad contract to be in if you were vulnerable (-200).

[@p.schmidt1754]

We play opening with a major need a 5 card suit.

[@endthisnonsense7202]

The top 4 of root causes needs to be addressed before players can improve their bidding.
Not in a specific order;
Overbidding
Underbidding
Failing to evaluate hand over and over again as bidding progresses
Using conventions one doesn't master

[@TonyStawBridgeClass]

You make some very good points!

[@ushapatel610]

Don't we need 5 H to open 1H?

[@TonyStawBridgeClass]

The bidding system I use in these talks is Acol, which is 4 card major.

[@jyutzler]

And this is why I refuse to play with randos online. If it is someone you know then you can coach them. Otherwise it is just infuriating to deal with.

[@sylviechrabaszcz415]

oh ya responder promises 4

[@sylviechrabaszcz415]

i thought you needed 5 spades to bid spades