Both Breida, now with the Miami Dolphins, and Mostert earned speed ratings of 95, according to our friends over at @TheSFNiners. Below is the complete list of the top-10.
Mostert led the team with 772 rushing yards and eight rushing touchdowns on 137 carries last season. Many took serious notice after the running back's 29-carry, 220-yard, and four-touchdown performance against the Green Bay Packers in the NFC Championship Game, helping lift the 49ers to a Super Bowl berth.
"My hunger, right now, more than ever, is so pure," Mostert said in May while noting that he spent this offseason gaining muscle in anticipation of an increased workload. "I want to just get back to that level and exceed what I did last year, times ten. That's just my mindset, right now."
Mostert entered the NFL after signing with the Philadelphia Eagles as an undrafted free agent out of Purdue in 2015. He initially signed with San Francisco on November 28, 2016, and then signed a new three-year deal on March 15, 2019. Mostert is entering the second year of that deal.