NFL Football Best Bets: Week 15 (2021)

Another winning week, as we went 2-1 in Week 14. We still have three picks we like this week despite all the line movement, COVID issues, and coaching changes that typically lend to more uncertainty. Let’s jump right into this week’s picks.

Best Bets: 25-15, Up 1228%

View the best player prop bets for this week’s slate with our NFL Prop Bet Cheat Sheet >>

Best Bet #1: Carolina Panthers at Buffalo Bills UNDER 44.5 (-105)

We like this play because it “checks a lot of boxes.”

This play starts with one of our favorite “checks”: Heavy Cash siding, inverse to the Market siding. What I mean by this is one of the best tells of “Sharks” or “Sharp Money” being on one side is when there is a strong disconnect between the total betting slips bought for one side and the total monies invested. Obviously, sharp bettors wager higher amounts than your average joe, so it’s a strong indication of sharp picks (and the steam you’d rather chase than fade). Take a look at the UNDER/OVER betting breakdown for this game:

	Percentage of Betting Slips	Percentage of Money Wagered
Over	66%	10%
Under	34%	90%

 
This is always a good place to start: the public is backing one side, yet the big money is backing another. When in doubt, be on the side of sharps.

Second, you’re already getting some value in this play as the number has actually moved UP over the week from 43.5 earlier.

Third, they are forecasting light snow for the game in Buffalo this weekend. Now, this is not ALWAYS the case, but all other things equal, it’s usually a fair situation to assume this may slow down score pacing between teams.

Finally, and really the place our model starts: This matchup has the lowest combined net PFF grades ((OFF1 grade – DEF2 grade) – (OFF2 grade – DEF1 grade)) between offense and defense in week 15:

	OFF	DEF	nOFF
Carolina Panthers	63	65.1	-8.8
Buffalo Bills	75.8	71.8	10.7

 
*Thanks to PFF for the data

This all leads us to favor the under in this matchup heavily.

Bet: Carolina Panthers at Buffalo Bills UNDER 44.5 (-105)

Best Bet #2: Cleveland Browns +3.5 (-115)

This game and its wild spread movement has been the talk of the week in the sports betting community. Now sitting at +3.5 for a team that was originally -9 in some books, it’s time we say enough.

Let’s start with the elephant in the room: the reason for the massive line swing is that COVID has decimated the Browns, including key positions like QB and Baker Mayfield. And I believe this is where most of the movement is coming from. But let me ask you: is the 2021 Week 15 Baker Mayfield really that much better than Nick Mullens? By SIS On/Off Report, which measures the change in EPA/play when a player is NOT on the field, the difference between Mayfield and the backup this season has been essentially 0 (coming in exactly at .01). The backup QB has even performed better than Mayfield in some key areas, notably accuracy. Take a look at the change in QB metrics (thanks again to SIS):

*Note “On Field” here is Baker Mayfield

That’s almost a 10% better rate of catchable passes. Not only could the other QB be at least “as good” as Baker, but looking at the splits more in-depth, it seems the Browns tend to take a more conservative approach and lean on their powerful run game to neutralize defenses.

The second reason we like this play is how bad Derek Carr has been in cold weather (dating back to college). Yes, he did “slay this dragon last season,” but it’s been widely reported that his overall play drops in cold weather. And with initial reports forecasting weather in the 40s in the friendly confines of Cleveland, it’s hard to see Carr producing at his normal average-to-above-average-QB self.

Lastly, the Browns roster is very deep for a team that should be at least a touchdown favorite in this home matchup (sans COVID) yet are sitting at +3.5 (across a key number). Take a look at what the starting lineups look like, thanks to our friends at PFF:

On Offense:

On Defense:

That doesn’t look like much of a fall, but instead more like a deep team that still is at home, is actually fighting for the playoffs, and getting more than a field goal. Just on that principle alone, we have to back the Browns.

Bet: Cleveland Browns +3.5 (-115)

Best Bet #3: Cincinnati Bengals to Win SU (+135)

There are two parts to this play.

First, it’s us putting our trust in PFF: Football Outsiders and Pro Football Focus have very different opinions of the Bengals’ season-long performance thus far. Football Outsiders has the Bengals coming in at a “middle-of-the-road” 18th ranking, whereas PFF has the team as the 6th best in the league! For two trusted analytics sources, you rarely see this kind of discrepancy in performance metrics.

Second, we like the comparative QB matchup here and wish that a decent QB v QB yardage prop was available, but like the game bet anyway because:

NET QB vs. Blitz performance (QB1 Net EPA/Play Blitz vs. NOT Blitzed x Opponent 2 expected Blitz Rate / QB2 Net EPA/Play Blitz vs. NOT Blitzed x Opponent 1 expected Blitz Rate).

To put it succinctly: Joe Burrow’s ability vs. the blitz (5th best according to SIS), and how much the Broncos send a blitz (9th most in NFL) vs. Teddy Bridewater’s ability when NOT blitzed (11% success rate points worse), and how LITTLE the Bengals send the blitz, together has us leaning in the Bengals favor (i.e. 2 predictive independent QB Matchup stats that both point in one team’s favor).

This is exactly the type of comparative data point we look for when identifying upset opportunities. And given we would only need 43.5% or so chance to make this an even EV bet, it tells our model this is a play opportunity.

Bet: Cincinnati Bengals to Win SU (+135)

Bet $10, Win $200 if Your Team Scores a TD >>

Subscribe: Apple Podcasts | Spotify | Google Podcasts | Stitcher | RadioPublic | Breaker | Castbox | Pocket Casts

If you want to dive deeper into fantasy football, be sure to check out our award-winning slate of Fantasy Football Tools as you navigate your season. From our Start/Sit Assistant – which provides your optimal lineup, based on accurate consensus projections – to our Trade Analyzer – that allows you to instantly find out if a trade offer benefits you or your opponent – we’ve got you covered this fantasy football season.