As of this posting, this video of Eagles-Jaguars highlights from Saturday night is still available on NFL.com. The anchor flubbed a line discussing Chip Kelly's decision to name Michael Vick as the starter and then clammed up. No big deal, he tried again and got it right. Except, for some reason, the clip was uploaded with the error and 10 seconds of dead air.
That's why we have the preseason, though. A lot of these young guys have never seen the game at this level. News comes in faster and the takes are stronger; sometimes assignments get missed. You can't get away with sheer skill at this level, it takes dedication and hours in the film room.