Antoine Cason, cornerback, San Diego Chargers
Cason never developed into the top-tier cornerback the Chargers wanted him to. He didn’t become a full-time starter until his third season and never sniffed a Pro Bowl. Probably most telling is this.
The Chargers let Cason play out his rookie contract and leave. He spent 2013 with the Cardinals as a backup and then split 2014 between Carolina and Baltimore. That’s the last time he’s played any NFL ball.