Kyle Shanahan won't say if Trey Lance, Jimmy Garoppolo will play vs. Chiefs

Shanahan sitting Garoppolo this weekend might not be a sign of anything, even if Lance takes the field and performs well. Los Angeles Rams coach Sean McVay recently said he will never have veteran Matthew Stafford take a snap during any preseason contests, and other coaches from around the league are expected to sit their starting signal-callers through the entire exhibition portion of the calendar to avoid needless injury worries. 

As Mike Florio of Pro Football Talk noted, Lance might receive first-team reps in preseason games to ensure he's protected behind San Francisco's starting offensive line before he makes way for backups Josh Rosen and Nate Sudfeld during those matchups.