Starting Wednesday, some of college football's top prospects will begin working out to impress NFL teams and improve their draft stock at the NFL scouting combine in Indianapolis. Some players' stock will soar. Others will sink. But inevitably, there will be some memorable performances that leave teams talking even after the 2010 NFL draft. Here's a look back at five of the most memorable performances in combine history: • Florida State Seminoles CB Deion Sanders (1989): Back in 1989, the scouting combine wasn't the event it is today. Reporters and cameras were not allowed in to the workouts to document them. So when Deion ran a sub-4.2 40-yard dash -- believed to be the fastest time ever run at the combine -- NFL personnel men stood and drooled. Those who saw it still remember it. Even before he entered the NFL, Sanders left his mark.
The next one isn't so good. We'll give you a hint: It's a former RB for the Buckeyes who may have decided not to do a few things at the combine. To check the whole list out, you must be an ESPN Insider.