McCaffrey's high praise and injury-driven opportunity position Black for significant preseason reps.

Third-round rookie RB drafted despite draft criticism (most pundits projected him later on Day 3 or undrafted); McCaffrey praised him as 'stacked' and 'exactly what you would want a rookie to come in and be like,' noting his mature football and high-level play; with Jordan James sidelined by fractured ribs and Isaac Guerendo out, Black will receive significant reps in camp and preseason to prove his skill set; the 49ers plan to 'throw the kitchen sink' at him in August to evaluate his capabilities, with expectation he'll be needed early in the season to keep McCaffrey fresh.