[AmoryG]

Sure they do. Take 67 for example: They moved up a lot after their second regional, even though their robot performed basically the same (when it could move, that is). New names will also probably show up after their first regional, even if teams that were just as good dropped off the rankings in earlier weeks. 469 was one of those teams, but I doubt even without playing another regional they would drop off the rankings, due to the hype surrounding their number.

However, I believe the teams that truly deserve to be in the top 25 won't drop off, even if they only played in week 1. 148 and 254 have played only 1 regional, and their rankings haven't changed much despite being on the charts for weeks. Team 40 will probably remain near the top, even though they're not nearly as well known as the other teams in the top 10.