Chargers running back Ryan Mathews looked good in the preseason, averaging 4.7 yards per carry and showing no hesitation after breaking both clavicles last year. But he's got a rough Week 1 matchup against the Texans.

Houston allowed the fifth-fewest Fantasy points (12.9) to opposing running backs last year. CBSSports.com experts rank Mathews, who will lose passing-down work to Danny Woodhead, in the low 30s among Week 1 options. Mathews is a Flex play, not an RB2.