Coach Kyle Shanahan clarified after Sunday's 16-10 preseason win over the Saints that Mason sat out due to hip soreness Matt Maiocco of NBC Sports Bay Area reports.

EDGE Analysis

The team doesn't sound overly concerned with Mason's injury, as he appears healthier than the team's other top running backs at the moment, but he got the night off Sunday nonetheless. Mason's next chance to take the field will come in Friday's preseason finale against the Raiders.