Ajayi is now just the fourth player in the Super Bowl era to post back-to-back 200-yard rushing games, joining Ricky Williams (2002), Earl Campbell (1980) and O.J. Simpson (1973 and 1976) in this elite group.

Ajayi won’t sustain a 200-yard-per-game rushing pace for the rest of the season, but this is no fluke.

Heading into Week 7, per Football Outsiders, the Dolphins offensive line ranked No. 24 in power blocking (runs on third or fourth down, two yards or less to go, that achieved a first down or touchdown) and No. 13 in stuff percentage (runs where the running back is tackled at or behind the line of scrimmage), illustrating this is not an elite unit. The game charters at Pro Football Focus are less impressed — they have the Dolphins ranked No. 31 out of 32 teams for their ability to run block, with only rookie Laremy Tunsil receiving a positive overall run-blocking grade this season.

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Yet more than half of Ajayi’s yardage on Sunday (128 yards) came after contact, and he ended the game against Buffalo with 10 broken tackles. Prior to Week 7, the Bills allowed the second fewest open-field yards per carry (0.29 yards per carry more than 10 yards past the line of scrimmage) this season.

https://twitter.com/NFL/status/790274578643693572

Ajayi now has five runs of 15 yards or more and leads the league in yards per carry after contact (4.11) with 20 missed tackles on the year.

The emergence of Ajayi comes at a perfect time for this Miami offense. Their quarterback, Ryan Tannehill, ranks No. 30 out of 31 qualified passers for ESPN’s Total Quarterback Rating and sees his passer rating drop from 112.4 to 38.8 when facing a pass rush, leaving the Dolphins running game as the best way to move the ball.

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But just because Ajayi has switched on beast mode doesn’t mean the rest of the season will be easy.

Up next for Miami’s emerging superstar is a Week 9 home game against the New York Jets, a team that allowed six total rushing yards on 12 carries to the Baltimore Ravens on Sunday, behind a defensive line that has stopped rushers at or behind the line of scrimmage 26 percent of the time in 2016, fifth highest in the NFL.