AL78, on 2019-October-22, 14:22, said:
There are four chances to compete on this hand:
- North could bid 2S over 1NT. As has been said above, it is usually a poor strategy to compete over 1NT on a balanced hand - and a 5332 shape is a balanced shape. But I have seen much worse overcalls - our suit is headed by the AK, we have an outside ace, we own the spade suit, we are both non-vul, we are playing Match Points, we want partner to lead a spade if on lead (unlikely). Club players will often make worse overcalls and you are probably playing with the room in overcalling. But we do have a good lead against 1NT, so probably wisest to pass.
- South could compete over 2D. This is easy to rule out.
- North gets a second chance to bid over 2H. I would be very tempted to throw in a bid here. I was happy defending 1NT, but much more interested to compete over a suit contract. I know that it is a live auction and partner might have nothing, but it is MPs and you need to muscle in at this vulnerability.
- Finally, South can protect once it is clear that the contract will be passed out. It is absolutely clear to bid at this stage. You know that the points are roughly equally divided and you can't sell out at the two-level when the opponents almost certainly have at least an eight-card fit.