It doesnt matter how many quarters hes played. We should not have drafted a QB in the 2nd round, none of these QBs were impressive. This isn't even a Geno thing, no QB in general should have been drafted. We had other needs, if we end up drafting a QB next year then the 2nd round pick was a waste.
and another pick for Geno, unless he's lights out for the last two quarters Sanchez probably starts game one. That said, I expect mistakes from the rookie. I always expect mistakes from rookies.