Meckwell convention
Meckwell is a method for defending against an opposing strong one notrump opening by intervening in the direct and passout seats. It features the following calls:
| Call | Meaning |
| Double | shows a single minor or both majors; bids 2, after which the intervener corrects to his actual suit if a minor, or hearts if holding both majors |
| 2 or 2 | shows the bid suit and a major |
| 2 or 2 | shows the bid suit |
| 2NT | shows the minors |
The convention is named based on the common sobriquet for the partnership of Jeff Meckstroth and Eric Rodwell, who popularized it.