I tapped out in half the time of my first IBJJF tournament and I was extremely disappointed at first. However, I watched the rest of the bracket and the guy who beat me was suspiciously good for a no-stripe white belt. The last match (which the same guy won) also looked suspiciously like a wrestling match.
It turns out that he has D-1 wrestling experience, which disqualified him after he won the bracket. So the guy he beat in the final is in the #1 spot on the podium. The guy who I would have originally shared 3rd place with got bumped to 2nd, but didn't show up.