Teams have four games worth of film on Sanchez now, as well as the Jets' offense in general... Ryan is smart enough to make adjustments of course, but eventually things like this catch up to you in the NFL. The true test for Sanchez will be to see how he bounces back in the next game or two.
On that play Keller was doubled, but he had Cotch one-on-one and he was open on a post. Just a bad read by Sanchez .
If you want to see a QB stare down a receiver, watch Kellen Clemens play. Sanchez has actually been good, for a rookie, at looking D-backs off. It was just a bad read.