Davis Mattek said Jordan James is his preferred last-round lottery ticket in San Francisco. Fourth-round rookie Isaac Guerendo and James are both currently sidelined, leaving 30-year-old Amir Abdullah as the temporary RB2 behind Christian McCaffrey. Mattek reminded listeners that Kyle Shanahan drafts a back every year because injuries always ravage the depth chart; Guerendo, for example, "has been injured his whole life and never got a full season in college." With Shanahan "terrified of rolling into the season with one-and-a-half running backs," Mattek expects whoever is healthy between the two rookies to claim the direct-backup role and inherit contingent touches in one of the league’s most RB-friendly offenses. James still costs a 20th-round pick, so Mattek is happily loading up in Best Ball as a pure upside stash whose path to relevance requires only the usual 49ers injury chaos.