luckadjusted

Week 13 2019 · December 1, 2019

No FTN charting for this game (drops and interception-worthy throws are not modelled).

Buccaneers at Jaguars, Week 13 2019: who deserved to win?

The Buccaneers beat the Jaguars 28–11, and it was no fluke: replayed with the way both teams actually played, the Buccaneers win 10 of 10.

Before kickoff the Buccaneers were 59% favorites. The biggest swing (Q1, 2:46 left): Return touchdown by the Buccaneers, worth 24 points of win probability to the Buccaneers.

Final

Tampa Bay Buccaneers 28
Jacksonville Jaguars 11

December 1, 2019 · TIAA Bank Stadium · Closing line: Buccaneers −3

Luck index +5 Buccaneers about even · −5 Jaguars

Each team’s own plays from this game, resampled into new drives 4,000 times: with the way both teams actually played, how often does this performance win? How the replay works

Ten replays. Buccaneers win 10, Jaguars win 0.

  1. 1 TB 41 JAX 6
  2. 2 TB 29 JAX 3
  3. 3 TB 44 JAX 21
  4. 4 TB 37 JAX 17
  5. 5 TB 23 JAX 6
  6. 6 TB 20 JAX 6
  7. 7 TB 12 JAX 0
  8. 8 TB 19 JAX 10
  9. 9 TB 19 JAX 13
  10. 10 TB 23 JAX 20

Three other ways to ask

Each answers a different question, so none of them replaces the replay above.

The closing betting line, turned into a probability. What everyone knew before the game.

The line plus what this game showed, weighted by how much one game can tell. It stays close to the line because one game says little.

Every kick, fumble bounce, drop, conversion and judgment call redrawn; everything else fixed. The narrowest view of luck.

How 4,000 replays ended

Buccaneers win 95% of them, Jaguars 5%, counting the 1% still level after regulation as half each. The line is what actually happened: Buccaneers by 17.

Show as a table
Final margin in the replaysShare of replays
Buccaneers by 17+62.6%
Buccaneers by 9–1622.1%
Buccaneers by 1–810.0%
Level after regulation0.6%
Jaguars by 1–83.6%
Jaguars by 9–160.9%
Jaguars by 17+0.1%

Where the luck was

Take the luck out

The final margin was Buccaneers by 17. Remove the luck, one kind at a time, and it becomes Buccaneers by 14.1.

Each row takes one kind of luck out of the margin. Color shows which team it helped. Luck shares are the fitted ones (how much of each component is luck).

The kicks

How likely each kicker was to make that kick (his own record, the distance and the weather), and what happened.

  • M. Gay, 25 yds made · 98% expected
  • J. Lambo, 53 yds made · 62% expected
  • M. Gay, 37 yds made · 89% expected
Bar: expected chance of a make. Filled dot: made. Open dot: missed or blocked.

When it happened

Jaguars’ chance of winning

As low as 0% and as high as 70%. Numbers mark the biggest luck moments, listed below.

nflfastR’s in-game win probability. It ignores the betting line, so it starts near even. Shaded above the middle while the Jaguars were ahead in it, below while the Buccaneers were.
#WhenWhat happenedWin probability forNext drive
1 Q1 14:20 The Buccaneers converted 3rd & 53rd & 4th downs · 40% expected +6% TB TB: Punt
2 Q1 12:44 The Buccaneers converted 3rd & 33rd & 4th downs · 51% expected +6% TB TB: Punt
3 Q1 9:35 The Buccaneers were stopped on 3rd & 113rd & 4th downs · 25% expected +7% JAX TB: Punt
4 Q1 7:54 The Jaguars converted 3rd & 53rd & 4th downs · 34% expected +12% JAX JAX: Turnover
5 Q1 3:48 The Buccaneers converted 3rd & 93rd & 4th downs · 29% expected +10% TB TB: Touchdown
6 Q1 2:46 The Jaguars fumbled and the Buccaneers recoveredFumble bounces · loose balls are close to 50/50Return touchdown by the BuccaneersSpecial teams +24% TB JAX: Turnover
7 Q4 9:18 The Jaguars converted 4th & 53rd & 4th downs · 34% expected +5% JAX JAX: Turnover
8 Q4 6:16 The Jaguars were stopped on 3rd & 23rd & 4th downs · 46% expected +6% TB JAX: Turnover on downs

Missing players

Key players (usually on the field for half the snaps or more) who missed this game or part of it, valued by position and quality. The same players are missing in every replay, so this counts as luck in points only.

  • Marcell Dareus (JAX DE), out (IR) · 0.7 pts
  • Myles Jack (JAX LB), out · 0.5 pts
  • Ronnie Harrison (JAX SS), out · 0.3 pts
  • James O'Shaughnessy (JAX TE), out (IR) · 0.2 pts
  • Geoff Swaim (JAX TE), out (IR) · 0.2 pts

Adjust the assumptions

Disagree with how much of a fumble bounce or a pass interference call is luck? Change it and the coin-flip replay reruns in your browser.

Only coin-flips re-rolled

Buccaneers 99% · Jaguars 1%

Final margin
Buccaneers by 17
Luck in points
2.9 for the Buccaneers
Luck-adjusted margin
Buccaneers by 14.1
Replay with same day's form
Buccaneers 95% · Jaguars 5% unchanged: why
How much of each is luck?

0% treats it as skill, 100% as pure luck. The tick is our fit.

What counts

We tested momentum on 19,000 lucky breaks and found none, so it's off by default. Why

Flip a play

Force the other outcome, in this game and in every replay: a made kick becomes a miss, a stop becomes a conversion, a flag goes the other way.

About these numbers

Play-by-play and win probability from nflfastR via nflverse; kicks valued against each kicker’s own record; drops and interception-worthy throws from FTN charting (not available for this game); injuries from snap counts and injury reports. No FTN charting for this game (drops and interception-worthy throws are not modelled).

Methodology and validation · All Week 13 2019 games · Buccaneers · Jaguars

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