Durham Bulls had a promotion sponsored by Republic Wireless' RELAY product (screenless cellphone for kids to keep in touch with parents) set record for most people wearing sweatbands sitting in the same section. Somewhere around 5K.. I think Rutgers students have a larger section.. could be wrong. But it could be a possibility.
What about a sweatband reading "BELIEVE"?
What about a sweatband reading "BELIEVE"?