The 33-year-old's limp arm is well documented, but his lack of pocket presence and poor decision making is foreboding.
"We'd better be close to being ready for the regular season," Schaub said, per CSN Bay Area. "We got off to a good start, but we stubbed our toe a few times there, especially in the second quarter. We just didn't execute. We need to be better than that."
Through three preseason games, Schaub is 24-of-47 passing (51.1 percent) with 218 yards and zero touchdowns.
Coach Dennis Allen spread the blame around, noting a dropped touchdown, protection issues and among reasons the quarterback struggled.
"We've got to improve ourselves as a passing game, and that's a full-team effort," Allen said. "That's not about one individual."
The trouble for the Raiders is that good NFL quarterbacks raise the play of others in an offense. They do not become the anchor pulling an already laboring ship further under the current.