Here’s a surprise: The New England Patriots are 8-3, leading the AFC East, with some of the best odds in the conference of winning the Super Bowl.

Oh, right. I’ve just described basically every Pats season in recent memory. This is the ninth consecutive season that New England has won at least eight of its first 11 games. The team’s current Elo rating of 1641, however, is the lowest it’s been through the same stage of the season since 2009 (and we don’t talk about that season).

So what are we to make of these Patriots, then? After overcoming the typical early season hiccups, is this year’s version ready to build championship momentum down the stretch like normal? Or is there still something a little bit off about a team that was showering its punter (of all players) with praise after an uncharacteristically modest win over the lowly New York Jets last week?

In advance of New England’s showdown Sunday against the Minnesota Vikings, let’s take a look at some of the Patriots’ calling-card metrics to see whether this season is business as usual in Foxboro.

Road warriors?

One of the Pats’ most eye-catching statistics during Bill Belichick’s time as head coach has been their near-invincibility at home, where they’ve won 87 percent of their games this decade. But their road record — winning more than 70 percent of the time away from Gillette Stadium — could be even more remarkable. From 2010 to 2017, the Pats’ winning percentage on the road was about 10.5 percentage points higher than what we’d expect from their home record — the third biggest gap in the NFL (behind the Cowboys and Eagles):

This year, though, New England is a perfect 5-0 at home but only 3-3 on the road — respectable but nowhere near the league’s best. (The Pats have also been outscored by 11 points in away games, against a road schedule that ranks just 28th in average opposing Elo.) And this might come up in the playoffs, unlike so many seasons in which the Pats had home-field advantage through the AFC title game. Right now, New England is in line for the AFC’s No. 2 seed behind the Kansas City Chiefs, but only a half-game separates them from the fourth-seeded Steelers.

Owning the turnover battle

Turnover margin is one of the most important factors in determining who wins or loses any football game. Conventional stathead wisdom, though, tells us that outlier turnover seasons — whether avoiding them on offense, forcing them on defense, or both — are unsustainable. While there are some ways a team can influence its tendency to have more takeaways than giveaways, a lot of it also comes down to luck.

Unless, of course, you’re the Patriots. New England perennially dominates this category, ranking first by a mile from 2010 through 2017 with a +116 turnover differential, almost double that of the next-best team. A lot of that is a function of having Tom Brady at QB; he’s tied for the second-lowest interception percentage of any passer in NFL history. But the Pats are also great at avoiding fumbles — only the Falcons had coughed it up fewer times since 2010, and no team had lost fewer fumbles than the Pats. And their defense had forced the second-most turnovers of any team this decade (behind the Giants), ranking second in interceptions and tied for third in fumbles recovered.

Such opportunism has historically paid big dividends for New England, but this year’s squad is still trying to recapture that formula. The Pats are currently +5 in turnovers, which ranks ninth in the league but is nothing special by their standards. Brady has his highest interception rate since 2013 (his seven picks already are only one off of his full-season total from last year), driving a big overall increase in giveaways per game, though the team is being more careful in recent weeks. And while the Pats have forced at least one turnover in all but one game this season, they are tied for eighth-to-last in the league in games with three or more takeaways, six behind the league-leading Bears.

Yards and points

In addition to — and correlated with — their dominant turnover differential, the Patriots have always had another trick up their sleeves in terms of winning extra games. It involves their yards per point (YPP): essentially, how efficiently they turn field position into scores on offense and how inefficiently they force opponents to do the same. By definition, when you have a lower YPP than the opponent, you will win more often because you’re trading field position for points at a more favorable rate than they are.

Like turnover margin, YPP is supposed to be pretty inconsistent from year to year, bouncing around with a team’s luck at picking up key first downs and converting red zone chances, along with the all-important knack for “bending but not breaking” on defense. Yet the Pats dominate this category so thoroughly and so consistently, it might be the single biggest factor in their ongoing success. Not only had they ranked first in both offensive and defensive YPP since 2010, but their net YPP differential of +5.6 was more than double the No. 2 Packers’ +2.5 mark over that span.

(This is one of the big reasons that worries about the Patriots’ defense always need to be tempered. Belichick’s team has traditionally punched above its weight in terms of points allowed, just because it always makes opponents work so hard to turn gains on the field into rewards on the scoreboard.)

This season, the Pats remain among the top net YPP teams, ranking fourth, but they are not quite dominating like usual. They rank just seventh in offensive YPP and sixth on defense, with a net YPP of +2.8, which trails the Bears, Saints and Chiefs. On top of the increase in turnovers per game from above, New England’s efficiency rankings on third down and in the red zone are worse, and the team has slipped in those same “situational” categories on defense. And if you want another cause for the Patriots’ YPP decline, their net starting field position is -2.6 yards per drive this season (meaning the opponent starts 2.6 yards closer to the end zone than the Pats), after a decade in which that number was a league-best +4.6.

In other words, many of the little things that usually add up to that massive YPP advantage for New England aren’t quite working as well so far this year. But the good news for the Pats is that their turnover margin and net YPP tend to improve radically from this point in the season onward, in no small part because Belichick specifically tries to build a tough, physical team that thrives in bad weather. So even in a relative down season by their key indicators, don’t be surprised if the Patriots build them up at least some before season’s end.

Gronk smash!

Tight end Rob Gronkowski has long been the Pats’ not-so-secret weapon on offense, helping the team transition seamlessly from the powerful Randy Moss-Wes Welker offense of a previous era to the version that’s been terrorizing the league for most of this decade.

But the famously fragile Gronk has appeared to show his age and mileage this season more than perhaps ever before. He’s missed three games with various ailments, and when he has played, he’s been limited to just 63.0 yards per game with a career-low 0.25 touchdown catches per contest. Gronkowski’s reduced mobility has hurt his trademark ability to rumble after the catch for spectacular gains, and it’s made him much less of a focal point in the offense than he’s accustomed to being. When on the field, Gronk has seen only 18.7 percent of the targets in the Pats’ passing game, his lowest number since getting 17.7 percent as a rookie.

But Gronk’s influence on the Patriots’ offense remains undeniable. In the eight games the star tight end has played in 2018, Brady’s passer rating is 98.2; in the three he missed, it dropped to 91.6 (league average is 94.9). Even with Gronkowski playing in a more limited physical condition than usual, producing less of a statistical footprint than before, this is confirmation that he’s still one of the biggest engines driving the Patriots’ success. The biggest question might simply be what kind of durability Gronkowski’s banged-up body will have over the rest of the season.

Brady stays ageless … sort of

Along with Belichick, the one constant in New England’s dynasty has been No. 12 under center. Brady has probably been the single most valuable player in the NFL this century, and he’s been crucial in engineering five Super Bowl titles for the Patriots with his consistency, leadership and ability to rally the team back from seemingly insurmountable deficits.

But at 41 — an age at which almost no other QB has ever been productive — there is a near-constant watch for any sign of slippage in Brady’s performance. And he has been a bit less sharp statistically than in years past. His adjusted net yards per attempt index at Pro-Football-Reference.com, which measures passing efficiency relative to the league (where 100 is average), is 111 this year, down from 117 last season and 138 the year before that. It hadn’t been so low since Brady was barely above average (102) in 2013.

Of course, there are reasons for Brady’s decline that go beyond his advanced age, from Gronk’s aforementioned absences to a four-game suspension for top target Julian Edelman at the start of the season and a WR corps in flux early on before adding Josh Gordon and shuffling roles for the likes of Phillip Dorsett and (WR-turned-RB) Cordarrelle Patterson. But Brady has managed to work around weird receiving situations before — and, in fact, his passer rating was better over the season’s first four games (94.0) than it’s been over the four most recent ones (90.8).

Combine that with a ProFootballFocus grade that’s down a bit from last season (though still sixth-best among QBs) and those ubiquitous stats about Brady’s off-target throws (at 22.1 percent, no qualified passer has thrown an errant pass more frequently this year), and it’s fair to ask whether Brady is playing at quite the same level as he did over the past few seasons. Whether because of Brady or the receivers, the Pats are currently tied for eighth in adjusted net yards per attempt — their worst showing since (again) 2013, a season that saw New England fall short in the AFC title game.

Taken altogether, these numbers reveal a Patriots squad that is not fully playing at the level it’s used to at this stage of the season. And that shows up in big-picture indicators such as Elo or even point differential, where the Pats’ +58 margin is its weakest of the decade through 11 contests. But even so, a lessened version of the Patriots still ranks among the league’s top teams. And as we mentioned above, the Vikings will be a good opponent for Belichick to use as a measuring stick for his roster. According to our combination of matchup quality (i.e., the harmonic mean of the teams’ Elo ratings in each game) and game importance (how likely it is to swing either team’s odds of making the playoffs), this will be the fourth-best game of the week:

The best matchups of Week 13 Week 13 games by ranking of average Elo ratings (using the harmonic mean) plus ranking of total potential swing for the two teams’ playoff chances, according to FiveThirtyEight’s NFL predictions Playoff % Playoff % Team A Current Avg. Chg* Team B Current Avg. Chg* Total Change Game Quality WSH 38.9% +/-19.5 PHI 23.7% +/-11.1 30.6 1525 BAL 46.1 18.0 ATL 4.2 3.1 21.0 1539 DAL 60.3 13.3 NO >99.9 0.1 13.3 1635 MIN 62.8 13.6 NE 99.1 1.0 14.6 1610 LAC 88.2 7.0 PIT 93.9 5.6 12.6 1619 CAR 30.9 14.9 TB 0.7 0.8 15.7 1492 IND 29.5 14.5 JAX 0.1 0.1 14.7 1468 DEN 13.0 10.7 CIN 6.4 5.3 16.0 1453 DET 1.3 1.6 LAR >99.9 <0.1 1.6 1550 SEA 74.9 10.5 SF <0.1 <0.1 10.5 1460 CHI 96.3 3.9 NYG <0.1 <0.1 3.9 1474 HOU 95.7 3.8 CLE 1.3 1.4 5.2 1462 KC 99.9 0.2 OAK <0.1 <0.1 0.2 1479 TEN 20.5 7.2 NYJ <0.1 <0.1 7.2 1417 MIA 5.1 3.9 BUF 1.3 1.3 5.2 1425 GB 6.1 3.0 ARI <0.1 <0.1 3.0 1412 Game quality is the harmonic mean of the Elo ratings for the two teams in a given matchup. *Average change is weighted by the likelihood of a win or loss. (Ties are excluded.) Source: ESPN Stats & Information Group

While the game has a lot more at stake for Minnesota, whose spot in the playoffs is still not fully locked in, there is still plenty for the Patriots to play for as well. Not only will this game affect seeding for the postseason (Elo says the Pats currently have a 60 percent chance of securing a first-round playoff bye), but it will also be another telling data point as to whether the Pats can get back to their mega-dominant form of the recent past, or if they’ll be merely good — but mortal — according to their signature metrics.

FiveThirtyEight vs. the readers

If you want to know where your team stands, FiveThirtyEight’s Elo ratings are a good indicator. You can check them out in our NFL prediction interactive, which simulates the rest of the season 100,000 times and tracks how often each team should make the playoffs and win the Super Bowl. Did you know you can also pick against the Elo algorithm in our prediction game? Try it out, and maybe you can climb up our giant leaderboard.

Here are the games in which Elo made its best — and worst — predictions against the reader picks last week:

Elo’s dumbest (and smartest) picks of Week 12 Average difference between points won by readers and by Elo in Week 12 matchups in FiveThirtyEight’s NFL prediction game OUR PREDICTION (ELO) READERS’ PREDICTION PICK WIN PROB. PICK WIN PROB. Result READERS’ NET PTS CIN 75% CIN 63% CLE 35, CIN 20 +13.4 – CAR 62 CAR 57 SEA 30, CAR 27 +4.1 – CHI 53 CHI 59 CHI 23, DET 16 +2.9 – HOU 58 HOU 63 HOU 34, TEN 17 +2.3 – NE 77 NE 82 NE 27, NYJ 13 +0.4 – PIT 70 PIT 69 DEN 24, PIT 17 +0.0 DAL 65 DAL 67 DAL 31, WSH 23 -0.5 – IND 68 IND 70 IND 27, MIA 24 -0.6 – NO 81 NO 83 NO 31, ATL 17 -0.9 – LAC 84 LAC 85 LAC 45, ARI 10 -0.9 – BAL 83 BAL 81 BAL 34, OAK 17 -2.3 – TB 63 TB 58 TB 27, SF 9 -5.7 – PHI 80 PHI 69 PHI 25, NYG 22 -8.1 – MIN 71 MIN 60 MIN 24, GB 17 -10.0 – BUF 56 JAX 55 BUF 24, JAX 21 -13.0 – Home teams are in bold. The scoring system is nonlinear, so readers’ average points don’t necessarily match the number of points that would be given to the average reader prediction.

On average, Elo beat our readers by 18.9 points in the game last week, bringing its record to 11 wins and one loss so far this season. Readers had the best pick of Week 12 — rightly pumping the brakes on Cincinnati’s chances of beating the Browns — but they were punished for picking against Elo in the Bills’ upset over the Jaguars, and they didn’t show enough faith in the victorious Vikings, Eagles and Bucs.

Among individual users who did better than average, congrats are in order to Ryan Gnizak, who led all users in Week 12 with 263.5 points, and to Greg Chili Van Hollebeke, who held on to a slim lead for the entire season with 934.5 points. Thanks to everyone who has been playing — and if you haven’t, be sure to get in on the action! You can make picks now and still try your luck against Elo, even if you haven’t played yet.

Check out our latest NFL predictions.