2026-10-31
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St Louis vs Detroit Red market analysis Oct 31: The Setup
Asset: St. Louis Blues (road underdog) | Opening: $0.483 | Spread: DET -1.5 (puck line) | Kalshi: 44/48c
This St Louis vs Detroit Red market analysis Oct 31 opens with two evenly matched clubs — both sitting at 15 points in the standings — meeting at Little Caesars Arena on Halloween. Detroit's 51.7% opening game signal gave the Red Wings a slim home edge on the moneyline, though the puck line made them -1.5 goal favorites. St. Louis arrived 7-6-1, capable of winning on the road but needing to overcome Detroit's structural advantage.
The Pattern: Underdog Rally — the Blues were bought at a deep discount after Detroit seized a two-goal lead, and their game signal climbed from $0.302 all the way to $0.950 as they stormed back to win 5-4.
Going in: The opening price at $0.483 said this was a coin-flip game; a Detroit goal or two early would push STL into oversold territory and create the entry the system was watching for.
Who Decided It
- St. Louis Blues (8-6-1): Justin Barron (1G, 1A) and Jimmy Snuggerud (1G, 1A) each posted two points, while Pavel Buchnevich's snap shot at P3 11:23 started the third-period comeback. Joel Hofer made 24 saves.
- Detroit Red Wings (6-6-3): Lucas Raymond (1G, 1A) and Emmitt Finnie (1G, 5 shots) drove Detroit's offense, but John Gibson allowed five goals on 15 shots (.667 save percentage), and the Red Wings couldn't protect a two-goal lead in the final period.
First Period: Early Lead, Rapid Reversal
Outlook check: The opening price at $0.483 held no directional bias — the game needed to develop before any signal was actionable.
Dalibor Dvorsky opened the scoring at P1 17:31 with a backhand goal assisted by Justin Barron and Dylan Holloway, pushing STL's game signal to $0.627 and RSI to 99.3 — deeply overbought. A bearish divergence fired at P1 12:26 (RSI 90.0, a lower high than the prior peak of 99.3) as Cam Fowler gave the puck away, signaling fading momentum. J.T. Compher answered at P1 11:47 with a snap shot assisted by Michael Rasmussen, tying the game and collapsing STL's signal to $0.482 with RSI crashing to 4.8. The period ended 1-1, STL signal at $0.480.
| Time | Play | Score | Game Signal | RSI | Kalshi STL |
|---|---|---|---|---|---|
| P1 17:31 | Dvorsky goal (Barron, Holloway) | STL 1, DET 0 | $0.627 | 99.3 | 54/64c |
| P1 12:26 | Bearish divergence signal | STL 1, DET 0 | $0.635 | 90.0 | 47/49c |
| P1 11:47 | Compher goal (Rasmussen) | STL 1, DET 1 | $0.482 | 4.8 | 38/48c |
| P1 2:38 | RSI exits oversold | STL 1, DET 1 | $0.480 | 42.3 | 46/51c |
Decision Point: Hold — No Entry Yet
| Time | Score | Game Signal | RSI | MACD | Kalshi STL bid/ask |
|---|---|---|---|---|---|
| P1 2:38 | STL 1, DET 1 | $0.480 | 42.3 | – | 46/51c |
Known at the time: RSI had recovered from 4.8 to 42.3 after Compher's equalizer, but the game signal sat near the opening price. No structural oversold setup had formed — the score was tied and momentum was neutral.
The decision: Stay out. The signal was back near fair value with no directional edge.
Outlook for the next quarter: A Detroit goal early in P2 would push STL below $0.40 and potentially into actionable oversold territory.
Second Period: The Entry — Down Two Goals
Outlook check: The P2 outlook proved correct almost immediately.
Keegan Kolesar tipped in a Carter Mazur feed at P2 19:19 to give Detroit a 2-1 lead, and STL's game signal collapsed to $0.302 with RSI at 1.8 — extreme oversold. The MACD histogram crossed bearish simultaneously. Adam Jiricek took a tripping penalty at P2 16:05, extending Detroit's pressure. RSI recovered above 30 at P2 14:08 after Michael Brandsegg-Nygård was called for hooking. A bullish divergence printed at P2 7:40 (RSI 34.8, a higher low than the prior 27.3). Lucas Raymond then scored unassisted at P2 6:46, pushing Detroit to a 3-1 lead and STL's signal to $0.121 with RSI 2.7. Jimmy Snuggerud tipped in a Robert Thomas feed with 28 seconds left to make it 3-2, RSI spiking to 97.1.
| Time | Play | Score | Game Signal | RSI | Kalshi STL |
|---|---|---|---|---|---|
| P2 19:19 | Kolesar goal (Mazur, Faulk) | STL 1, DET 2 | $0.302 | 1.8 | 31/32c |
| P2 7:40 | Bullish divergence signal | STL 1, DET 2 | $0.274 | 34.8 | 10/12c |
| P2 6:46 | Raymond goal (unassisted) | STL 1, DET 3 | $0.121 | 2.7 | 10/12c |
| P2 0:28 | Snuggerud goal (Thomas, Broberg) | STL 2, DET 3 | $0.243 | 97.1 | 23/24c |
Decision Point: ENTRY — Long STL at $0.302
| Time | Score | Game Signal | RSI | MACD | Kalshi STL bid/ask |
|---|---|---|---|---|---|
| P2 19:19 | STL 1, DET 2 | $0.302 | 1.8 | -0.95 hist | 31/32c |
Known at the time: This St Louis vs Detroit Red market analysis Oct 31 flagged the entry the moment Kolesar's tip-in landed. STL's game signal had dropped to $0.302, RSI was at 1.8 — extreme oversold — and the MACD histogram had just crossed bearish. Detroit led by one goal with nearly a full period remaining. The signal was pricing in a near-certain Detroit win, but with 39+ minutes left, the oversold reading was severe.
The decision: Long STL at $0.302. The combination of extreme RSI oversold (1.8) and a game signal well below the spread-implied fair value created the entry. Kalshi ask was 32c.
Outlook for the next quarter: STL needed to close the gap to one goal to keep the trade alive. A third Detroit goal would push the signal toward zero.
Third Period: The Comeback
Outlook check: STL entered P3 down 3-2, game signal at $0.239 — the trade was underwater from the P2 19:19 entry but still open.
Emmitt Finnie scored at P3 16:31 (assisted by Lucas Raymond and Moritz Seider) to make it 4-2, crashing STL's signal to $0.069 with RSI at 4.3. The trade was at maximum stress. Pavel Buchnevich answered at P3 11:23 with a snap shot off a Jake Neighbours feed — STL 3, DET 4, signal recovering to $0.177. Justin Barron tied it at P3 7:03 with a snap shot assisted by Snuggerud, the MACD crossing bullish as the signal surged to $0.484. Then Aleksanteri Kaskimaki tipped in an Alexey Toropchenko feed at P3 6:45 to give STL a 5-4 lead, signal jumping to $0.857.
| Time | Play | Score | Game Signal | RSI | Kalshi STL |
|---|---|---|---|---|---|
| P3 16:31 | Finnie goal (Raymond, Seider) | STL 2, DET 4 | $0.069 | 4.3 | 7/8c |
| P3 11:23 | Buchnevich goal (Neighbours) | STL 3, DET 4 | $0.177 | 86.7 | 18/19c |
| P3 7:03 | Barron goal (Snuggerud) | STL 4, DET 4 | $0.484 | 97.2 | 79/83c |
| P3 6:45 | Kaskimaki goal (Toropchenko, Suter) | STL 5, DET 4 | $0.857 | 98.8 | 79/83c |
Decision Point: ENTRY — Long STL at $0.857 (Trade 2)
| Time | Score | Game Signal | RSI | MACD | Kalshi STL bid/ask |
|---|---|---|---|---|---|
| P3 6:45 | STL 5, DET 4 | $0.857 | 98.8 | +6.18 hist | 79/83c |
Known at the time: Kaskimaki's tip-in had just given STL the lead with 6:45 remaining. The game signal was at $0.857, RSI overbought at 98.8, and the MACD histogram was strongly positive. With STL ahead by one and under seven minutes left, the signal reflected a high-probability hold.
The decision: Long STL at $0.857. The lead change justified a second entry — STL now controlled the game. Kalshi ask was 83c.
Decision Point: ENTRY — Long STL at $0.897 (Trade 3)
| Time | Score | Game Signal | RSI | MACD | Kalshi STL bid/ask |
|---|---|---|---|---|---|
| P3 5:33 | STL 5, DET 4 | $0.897 | 98.9 | +5.83 hist | 89/90c |
Known at the time: In this St Louis vs Detroit Red market analysis Oct 31, Emmitt Finnie was called for holding against Mason McTavish at P3 5:33, giving STL a power play with 5:33 left and a one-goal lead. The game signal had climbed to $0.897, RSI 98.9. The penalty added further pressure on Detroit.
The decision: Long STL at $0.897. The power play opportunity with a lead and under six minutes remaining pushed the signal higher. Kalshi ask was 90c. A MACD bearish cross and bearish confluence printed at P3 4:06 — after this entry — as the histogram began fading from its peak, but STL held the lead. Joel Hofer stopped Emmitt Finnie's final snap shot at P3 0:00 to seal the win.
Decision Point: EXIT — All Three Trades Closed at P3 0:00
| Time | Score | Game Signal | RSI | MACD | Kalshi STL bid/ask |
|---|---|---|---|---|---|
| P3 0:00 | STL 5, DET 4 | $0.950 | 99.5 | -1.31 hist | 99/100c |
Known at the time: The final buzzer ended the game. STL won 5-4. All three long positions closed at $0.950 game signal, Kalshi bid 99c.
The decision: Exit all positions. Game over — STL wins.
Final Accounting
This St Louis vs Detroit Red market analysis Oct 31 produced three completed trades, all long STL, with the primary entry at P2 19:19 generating the bulk of the return.
| # | Trade | Entry | Exit | Game Signal return | Kalshi entry (ask) | Kalshi exit (bid) | Kalshi return |
|---|---|---|---|---|---|---|---|
| 1 | Long STL | $0.302 (P2 19:19) | $0.950 (P3 0:00) | +214.8% | 32c | 99c | +209.4% |
| 2 | Long STL | $0.857 (P3 6:45) | $0.950 (P3 0:00) | +10.8% | 83c | 99c | +19.3% |
| 3 | Long STL | $0.897 (P3 5:33) | $0.950 (P3 0:00) | +5.9% | 90c | 99c | +10.0% |
Average: Game Signal +77.2% | Kalshi +79.6%
The Game Signal return is the model's price; the Kalshi return is what the market paid, buying at the ask and selling at the bid. Trade 1 (+209.4% on Kalshi vs +214.8%) bought at 32c against $0.302 and sold at 99c against $0.950, so Kalshi paid less; Trade 2 (+19.3% on Kalshi vs +10.8%) bought at 83c against $0.857 and sold at 99c against $0.950, so Kalshi paid more; Trade 3 (+10.0% on Kalshi vs +5.9%) bought at 90c against $0.897 and sold at 99c against $0.950, so Kalshi paid more.
Underdog Rally in This Game
This St Louis vs Detroit Red market analysis Oct 31 is a clear example of the Underdog Rally pattern. The Underdog Rally occurs when a team trading below its pre-game implied probability — due to an in-game deficit — is bought at a discounted game signal and subsequently recovers to win. Here, STL opened near fair value at $0.483, fell to $0.302 after Detroit's second goal, and was bought at extreme oversold (RSI 1.8) before three third-period goals completed the comeback from 4-2 down. The full definition is on the [Patterns page](https://www.sportchartz.com/patterns/#underdog-rally).
This St Louis vs Detroit Red market analysis Oct 31 confirms that the deepest entry — $0.302 at P2 19:19 — carried the trade, while the two late additions at $0.857 and $0.897 captured the final minutes of a locked-in lead.
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