Why Chris Borland's Retirement Should Terrify The NFL

Chris Borland, a star rookie for the San Francisco 49ers, retired on Monday. He's 24. Jason Worilds, a top linebacker for the Pittsburgh Steelers, retired last week. He's 27. Jake Locker, the starting quarterback for the Tennessee Titans, also just retired this month. He's 26. Sensing a trend? A cluster of young NFL players [...]