If you're counting on rookie receivers to produce you must think everyone is a Randy Moss. Most receivers take 3 years before you know they're a bust or not, hence Ashley Lelie and Darius Watts. Now, Lelie wasn't a bust; he just turned out to be a little better than average. Watts was a bust.
Marshall's been hurt and because of that he hasn't been able to get on-the-field training. Shanahan's got one of the more complicated offenses. I believe Marshall had a catch against Detroit, but I could be wrong. Hixon also has been hurt. Give these guys a break. Fans need not panic about anything so early in the season. We're not even 0-2!