The Washington Post has a good article today on UMBC and their preparations for meeting Georgetown. The main point is that many UMBC players know the Hoyas. Some played against future-Hoyas during their days of high school basketball. Some play in the Kenner League during the summers. Some transferred from the JMU team that squared up against the Hoyas a few years ago. The point is the Retrievers come into the game with their eyes wide open.
If you think about it, that's the downside with playing a low-seeded team from the same geographic area as you. It's not like UMBC is playing Tennessee. Their local papers cover the Hoyas. The Hoyas are on TV around here. And many of these kids probably grew up as Georgetown fans.