The players also said it's common around the league to participate in incentive pools and to discuss testing an opposing player's threshold for pain, particularly when he has a known injury.
"When it was spoken about — and it was spoken about on every team — it's more along the lines of: 'Tom Brady has sore ribs, so let's test him out. Let's test out his ribs,'" the second player said.
"You're just trying to win the game," the player continued. "It's a business and we want to attack our competing business' weakness."
Copyright 2012 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.