The NFL regular season comes to an end on Sunday Night Football when the Miami Dolphins and Buffalo Bills collide with the AFC East title on the line at Hard Rock Stadium. The Dolphins (11-5) enter Sunday night's showdown with a one-game lead in the division over the Bills (10-6). Miami needs a win or tie to win the division, while Buffalo needs to beat the Dolphins to win the AFC East for the fourth straight year.

Kickoff is scheduled for 8:20 p.m. ET. Buffalo is a 3-point favorite in the latest Bills vs. Dolphins odds, while the over/under for total points scored is 48. 

Before you make any Dolphins vs. Bills picks or NFL parlays, you need to see what SportsLine senior analyst Larry Hartstein has to say, given his mastery of picks in games involving Miami.

A former lead writer for Covers and The Linemakers, Hartstein combines a vast network of Vegas sources with an analytical approach he honed working for Pro Football Focus. He tied for 52nd place (out of 1,598 entries) in the 2022 Westgate Las Vegas SuperContest, going 53-34-3 ATS. Those selections form the basis of his weekly SportsLine NFL best bets, which are 69-43-2 since the start of last season, including a 14-4 record the last six weeks.

Most importantly, Hartstein has a read on the pulse of the Dolphins. He is 27-17-1 (+804) on his last 45 picks in games involving Miami! Anyone who has followed him is way up.

Hartstein knows that Buffalo has dominated the head-to-head series against the Dolphins recently. The Bills have won 10 of the last 11 matchups against Miami, including the playoffs. That includes a 48-20 Buffalo victory in upstate New York in Week 4.

Hartstein also has taken into account that Miami has the most prolific offense in the league. Led by quarterback Tua Tagovailoa and an arsenal of speedy receivers, the Dolphins lead the NFL in scoring offense (30.1 points per game) and total offense (409.2 yards per game). The franchise has led the league in both categories just twice before (1972 and '84).

Now, Hartstein has locked in another confident against-the-spread pick for Bills vs. Dolphins. We can tell you he's leaning Under the point total, but he knows a crucial X-factor that makes one side of the spread a MUST-BACK! You ABSOLUTELY need to see what it is before locking in any picks of your own.

Who wins Dolphins vs. Bills on Sunday Night Football? And what critical X-factor makes one side of the spread a MUST-BACK? ... Join SportsLine right now to see which side of the Bills vs. Dolphins spread to jump on, all from the expert who's 27-17 on picks involving Miami!