Richard Sherman once counted Colin Kaepernick among his biggest rivals.
Now, the Seattle Seahawks cornerback believes Kaepernick is being treated unfairly.
Appearing on ESPN First Take Friday, Sherman was asked if Kaepernick is being blackballed by NFL teams.
"... There was a year Matt Schaub had a pretty rough year and got signed the next year. So it has nothing to do with football. You can see that. They signed guys who have had off years before."
"I'm sure he is," Sherman said. "It's difficult to see because he's played at such a high level, and you see guys, quarterbacks, who have never played at a high level being signed by teams.