According to OddsShark, the matchup opened this week favoring the Dolphins by 2½ points; since then, however, the line has moved Miami to 4-point favorites. The over/under for total points scored opened and remains at 38.
A possible factor is time away, as the Rams haven't played since last Thursday, when they defeated the then-undefeated Arizona Cardinals, 17-3. At 3-2, St. Louis could earn its first three-game winning streak since late 2006. Another is that St. Louis will be without leading wide receiver Danny Amendola, who suffered a clavicle injury in the win over the Cardinals.
Miami is coming off a 17-13 win on the road over the Cincinnati Bengals, and rank first in the league in opposing rushing yards allowed per game, giving up only 61.4 yards per contest.