Trinidad, on 2014-June-26, 23:54, said:
I once saw an opponent bid 2♦, by putting the ♦2 on the table. IMO that was neither an accidental exposure nor a lead.
Rik
If a card is exposed during the auction (that is, up until the final pass of the auction) the Laws, specifically Law 24, don't care
why it was exposed. It's simply an exposed card*. Law 24 also applies to cards exposed during the clarification period (that part of the auction period after the end of the auction). During that period, if the TD determines that the exposed card was intended as an opening lead which was out of turn (usually this will be pretty obvious) then Law 54 applies. A card exposed during the play period may or may not be a little more difficult to handle. Was it a lead out of turn, a play out of turn, a second (or third, or twelfth) play to a trick to which the player has already played, or an accidentally exposed card? I don't think that, during the play period, there are other possibilities, but I'd be happy to discuss other possibilities if someone can come up with any.
*This can be complicated by "I thought the auction was over" and a face-up lead when there have not yet been three passes. IMO, even if somebody picked up his bidding cards, or knocked on the table, there have not been three passes. The only way there can have been three passes is if three players in succession put a pass card on the table, or said "pass" (which last they're not supposed to do using bidding boxes, and I would tell them so — call it a PP(Warning)). I suppose some of you will disagree with me on that, but it's what the law (in conjunction with the bidding box regulation) says.