Me and My Partner (jakob_r) were the two who had opened Multi and were told at the end that we were unable to play multi in the tournement. I had a discussion with Valerie Westheimer after the tournement, and what she told me was that the Juniors were "not prepared" and trained to handle multi. By the same reasoning, they could ban people playing precision, since some juniors are "not prepared" to defend against it... And precision is a whole system, as opposed to just a single bid. JuniorsBBO is made up of players from around the world, and in most NBOs other than ACBL, multi is allowed. I think that to cater to the 6 ACBL players who are playing in the tournement is extreme favoritism. In most parts of the world, multi is as common as Bergen Raises or Inverted Minors. I really dislike their attitude toward this, and I think that Kevin said it perfectly. I also view JuniorsBBO tournements as an opportunity to practice against other juniors with a regular partner for a trials or international competition. If we use multi in our system, we should be able to play it here, since our system has been built with multi in it. To remove multi, would mean completely changing our system, and I don't think that we should have to play basic bridge to baby the few people who do not know how to defend against it. I don't care, I'll even provide a defense, but it needs to be legalized.