Boston Bruins at Tampa Bay Lightning, NHL forecast
Win probability
Starts from the pregame forecast, then moves with every score and the time left. Above the line favors TB; hover for each play.
Game center
From the ESPN box score.
Top performers
Bruins- Cole KoepkeGoals2
- Patrick BrownAssists1
- Cole KoepkePoints2
LightningScoring summary
- P315:53Cole Koepke Goal (9) Snap Shot, assists: David Pastrnak (47), Casey Mittelstadt (24)4–0
- P314:52Nikita Zadorov Goal (4) Wrist Shot, assists: John Beecher (7)3–0
- P313:16Mark Kastelic Goal (5) Slap Shot, assists: Patrick Brown (1), Ian Mitchell (1)2–0
- P210:32Cole Koepke Goal (8) Wrist Shot, assists: none1–0
Turning points
The 4 plays that swung the win chance most, each judged at its own moment: the chance with the score just before it against just after.
- P210:32Cole Koepke Goal (8) Wrist Shot, assists: noneBOS 1 – 0 TB · BOS 34% → 55% +20BOS 34% → 55%+20 pts
- P313:16Mark Kastelic Goal (5) Slap Shot, assists: Patrick Brown (1), Ian Mitchell (1)BOS 2 – 0 TB · BOS 82% → 98% +16BOS 82% → 98%+16 pts
- P314:52Nikita Zadorov Goal (4) Wrist Shot, assists: John Beecher (7)BOS 3 – 0 TB · BOS >99% → >99% +1BOS >99% → >99%+1 pts
- P315:53Cole Koepke Goal (9) Snap Shot, assists: David Pastrnak (47), Casey Mittelstadt (24)BOS 4 – 0 TB · BOS >99% → >99% +0BOS >99% → >99%+0 pts
The pick
Reconstructed from what was known before the game: the ratings at that point and the closing line.
Lightning 72%
Forecast Elo ratings alone
How often that comes true: NHL favorites the forecast gave 70–75% have won 76.2% of 172 graded games.
- Market
- TB 72%
- ML BOS +240 / TB -290
- Pre-line forecast
- TB 68%
- Elo + market-implied
- Elo ratings
- TB 66%
- Ratings vs. market
- −5.6 pts
- TB: Elo 66.0%, market 71.7%
- Fair odds
- TB -253
- BOS +253 · the forecast as odds, no margin
- Pregame projection
- BOS 2.1 – 3.4 TB
- Margin from the forecast, posted total 5.5
How the number is built
Elo inputs in rating points (higher favors that team; 25–28 Elo is about a point of spread in football and basketball), then how the pieces combine.
| Factor | BOS | TB | Why |
|---|---|---|---|
| Team rating | 1487 | 1559 | Elo entering the game; 1500 is league average |
| Home field | — | +35 | Worth 35 Elo in the NHL |
| Starting goalies | 0 | +8 | BOS: Jeremy Swayman: team allows 0.01 more goals than with its usual starter (≈43 weighted starts) · TB: Andrei Vasilevskiy: team allows 0.21 fewer goals than with its usual starter (≈44 weighted starts) |
| Elo ratings | TB +115 Elo | TB 66.0% | |
| Market-implied ratings | TB 68.1% | Team strength as past closing lines priced it, same game context | |
| Pre-line forecast | TB 67.7% | 20% Elo, 80% market-implied (log-odds blend) | |
| Forecast | TB 71.7% | Follows the market (vig removed): in testing, adding the ratings made it less accurate | |
Tale of the tape
This season coming into the game, regular season, each number with its league rank (the longer the bar, the higher). Home and road: the host's record at home against the visitor's on the road. Overtime and shootout losses count as losses in these records. Shot share is a team's share of the shots on goal in its games. PDO adds shooting and save percentages: far from 100 tends to even out.
| BOS | Stat | TB |
|---|---|---|
| 28th of 322.7 | Goals scored | 3.62nd of 32 |
| 22nd of 323.2 | Goals allowed | 2.75th of 32 |
| 28th of 32−0.5 | Margin | +1.03rd of 32 |
| 20th of 3249.2% | Shot share | 50.1%16th of 32 |
| 24th of 3289.6% | Save percentage | 91.5%2nd of 32 |
| 30th of 322–8 | Last 10 | 9–11st of 32 |
| 26th of 3210–20 | Road vs home | 23–95th of 32 |
Rating history
Each team's Elo over the last two seasons. Hover or drag to compare on any date.
Recent form
Last five results, and whether the forecast hit.
Against the line
How each team has done against the closing spread and total, coming into this game.
| This season |  BOS |  TB |
|---|---|---|
| Puck line | 30–34 | 34–28 |
| Last 10 | 8–2 | 9–1 |
| Favorite | 10–21 | 24–21 |
| Underdog | 20–13 | 10–7 |
| Overs–unders | 31–33 | 27–35 |
| Overs–unders, last 10 | 3–7 | 5–5 |
Against each game's closing line. Books set every line knowing these records: across 3,901 past games, the team with the better record against the spread so far that season covered 51.2%, short of the 52.4% a standard −110 bet needs, and over/under streaks held 48.0% of the time. They describe the past.
Head to head
BOS 2–4 TB in their last 6 meetings; the forecast called 4 of 6.