SportsProof
Sione Vaki
BUF

RBs vs Buffalo Bills

As of Week 2 · through 1 game · PPR

Sione Vaki
Comparing
Sione Vaki vs the Bills
Projection 2.7 pts · 2 games played this season
Sit

RB1 = the highest-scoring RB against Bills in each game, not a fixed depth-chart spot.

RB1 avg pts
28.9
PPR per game
Rank
7
of 32 (1 = most allowed)
vs League
+65%
lg avg 17.5
WkTeamPlayerCarRuYdRuTDTgtRecReYdReTDFPts
1HOUHOUDavid Montgomery206023319128.9
Average20.060.02.03.03.019.01.028.9
Median20.060.02.03.03.019.01.028.9
High206023319128.9
Low206023319128.9

Averages are raw, outliers are never removed.

How Sione Vaki should do vs the BillsSeason log, the group you pick, and a projection

Season so far, compared with what the group you pick below has done against the Bills, plus a projection for this game.

What is this table?

Rows at the top are every game Sione Vaki has played this season, using the same stat columns as the table above.

Compare against picks which group of Bills opponents to line them up with: the best RB they faced in each game (1), the second best (2), the third best (3), or all of the top three. Nobody knows which slot Sione Vaki will land in this week, so this is your call, not a guess.

Bills avg is the average line of that group. Difference is that minus Sione Vaki's own average: green means the defense gives that slot more than Sione Vaki usually produces.

Projected is Sione Vaki's recent-weighted average scaled by how generous the Bills were to the slot you picked. Change the slot and the projected points change, because each slot has a different matchup adjustment. Picking Top 3 uses the usual-role projection.

Compare against
WkOppCarRuYdRuTDTgtRecReYdReTDFPts
1NO270111102.8
2BUF170111303.0
Vaki avg1.57.00.01.01.012.00.02.9
Bills RB2 avg9.042.00.01.01.0-2.00.05.0
Difference+7.5+35.0+0.0+0.0+0.0-14.0+0.0+2.1
Projected as RB21.56.90.01.01.011.90.02.8

Difference is what the defense allows minus what Vaki averages (green = defense gives up more). Projected stats scale the player's averages by the matchup adjustment, so they are a rough guide.

Start / Sit · Sione VakiMedium confidence · 2.7 proj ptsSit

Sione Vaki usually plays as the team's RB2, so the verdict uses the RB2 numbers, not the slot selected above.

  • Sione Vaki averages 2.9 PPR points over 2 games (recent-weighted 2.9) and has played as the team's RB2.
  • The Bills have allowed 4.0 points to RB2s over 2 games (-16% vs league). The model applies 40% of that gap because the sample is small, giving a -6% adjustment.
  • Projection: 2.7 points.
  • For reference, a typical weekly starter-level RB scores about 12.2 and a top-tier one about 20.0.
  • A statistical model from box scores, Vegas lines, weather and injury tags. It cannot see role changes or in-game events.
Prediction & chance to scoreSione Vaki vs the Bills

Prediction for Sione Vaki

Nobody knows which slot Sione Vaki will land in this week, so pick the one you expect. The projection changes because each slot faces a different average from the Bills.

If Sione Vaki plays as
2.8
projected PPR points

I predict about 2.8 points for Sione Vaki if playing as a RB2. Sione Vaki has averaged 2.8 over 1 game, and the Bills have given up 5.0 to RB2s (-4% vs the league average of 5.2).

How this projection is built

1. The player. Sione Vaki scored: Wk 1 2.8. Average 2.8; weighted toward recent games it is 2.8.

2. The defense. Over 1 game, the Bills allowed 5.0 points to their opponent's RB2. The league average for that slot is 5.2, so that is -4%.

3. Trusting small samples less. With 1 defensive game, only 25% of the gap is applied, capped at +/-30%. That gives a -1% adjustment (x0.99).

4. Result. 2.8 x 0.99 = 2.8. Switching slots only changes step 2 and 3: the player's own numbers stay the same, but each slot faces a different defensive average.

It is a statistical model, not knowledge of injuries, game script or weather.

Chance to score

Type a point total to see how likely Sione Vaki is to reach it as a RB2.

37%
chance of 3+ PPR points
Why this percentage?

The projection (2.8) is the middle of the range. Fantasy scores swing a lot from game to game, so the model spreads possible scores around it by about 1.7 points, leaning on Sione Vaki's own game-to-game swings once there are several games (and on typical RB swings before that).

Scores are modelled as right-skewed, since a big game is possible but a very negative one is not. The percentage is the share of that spread at or above 3.

With only 1 game of history, treat this as a rough gauge. It gets sharper as the season goes on. It is never lower than 1% or higher than 99%.

InsightsPlain-English takeaways from the table
  • RB1s have averaged 20.0 carries, 60.0 rushing yards and 3.0 receptions against the Bills across 1 game.
  • The Bills allow 28.9 PPR points to RB1s, +65% versus the league average of 17.5 (ranked 7 of 32, where 1 is most generous). That is a favorable matchup.
  • RB1s scored a touchdown in 1 of 1 games (100%).
  • Small sample: only 1 game so far. Treat these numbers as directional, not settled.

Insights are generated by rules from the table above and recalculate every week.