Angels vs Red Sox Prediction Market Odds, September 9, 2026
| Spread | Total | ML | Best ML | |
|---|---|---|---|---|
Angels | +1.5 — | O 8.5 — | 100%100% | 100% Kalshi |
Sox | -1.5 — | U 8.5 — | 0%0% | — |
| Spread | Total | Moneyline | Best ML | |
|---|---|---|---|---|
Los Angeles Angels | +1.5 — | O 8.5 — | 100%100% | 100% Kalshi |
Boston Red Sox | -1.5 — | U 8.5 — | 0%0% | — |
Boston hosts Los Angeles in the rubber game of a three-game set at Fenway Park, first pitch 6:45 PM ET on September 9, 2026, with the series level at 1-1 after the Angels took Tuesday night 6-1. The Red Sox are 80-66 with a plus-84 run differential and a wild card magic number of 11; the Angels are 55-90, 19 games back in the AL West and already eliminated. The starting pitching runs the same direction as the standings for once: Jake Bennett (9-6, 3.34 ERA, 1.02 WHIP over 99.2 innings) against Ryan Johnson (3-8, 5.17 ERA, 1.39 WHIP over 78.1 innings). Roughly $10.2K in lifetime volume has traded across Kalshi and Polymarket on this board, and the live board above carries the current moneyline, run line, totals and prop prices.
The Angels vs Red Sox rubber game is the first of the three meetings this week where the pitching and the price agree. Boston is 80-66 with 648 runs scored against 564 allowed, third in the AL East and seven games behind Tampa Bay (86-58), while the Angels are 55-90, outscored by 75 runs on the season and 25-46 away from Anaheim. As of the evening of September 8, 2026, the board prices the Red Sox at 67c on both Kalshi and Polymarket and the Angels at 34.5c (35c Kalshi, 34c Polymarket). ESPN's matchup model puts Boston at 69.4%, so the market and the model are inside three points of each other.
Angels vs Red Sox Starting Pitching Matchup
Jake Bennett is the reason this is a two-thirds favorite rather than the 57.5c number Boston carried on Tuesday. He is 9-6 with a 3.34 ERA across 17 starts and 99.2 innings, with 81 strikeouts against 18 walks and a 1.02 WHIP. The walk rate is the tell: 18 free passes in 99.2 innings is elite command, and it is what lets Boston run him deep enough to keep a thin bullpen out of the middle innings.
Ryan Johnson gives the Angels the opposite profile. He is 3-8 with a 5.17 ERA over 15 starts and 78.1 innings, with 58 strikeouts against 38 walks and a 1.39 WHIP. That is roughly five and a quarter innings per turn with a walk every other inning, and it is the widest starter gap either side has shown in this series. Reid Detmers, who leads the Angels with a 3.32 ERA and 191 strikeouts, threw Tuesday and is not available.
The injuries cut the other way and are the case for the Angels at 34.5c. Boston lost Willson Contreras, who leads the club with 26 home runs and 79 RBIs, to the 10-day injured list on September 8 with a hamstring, and Ceddanne Rafaela, the team's batting average leader at .282, has been out since September 6 with a quad. Boston scored one run in Tuesday's loss with both out of the lineup.
What the Angels vs Red Sox Spread and Total Imply
The run line has Boston at -1.5 for 48.5c (48c Kalshi, 49c Polymarket), with the Angels at -1.5 for 26c and Boston at -2.5 for 39c. Pairing a 67c moneyline with a 48.5c run line says the market expects about 72% of Boston wins to come by two runs or more, a decisive read that leans on the Bennett-Johnson gap rather than on a Red Sox offense missing its top two hitters.
The totals are where the volume sits. Over 7.5 runs is the most-traded total leg on the board at $701 in lifetime volume and prices at 66c, with over 8.5 at 58c on $231 traded and over 9.5 at 48c. Through five innings, over 4.5 runs trades at 56.5c and Boston -1.5 sits at 43.5c. The single busiest side market on the whole board is the first-inning run at 52c with $2.3K traded, more than the Angels moneyline leg has drawn.
Movement is limited and should be read as such. Across 13 captures on the Boston moneyline between roughly 8:08 PM and 10:10 PM ET on September 8, the price moved a single point, opening the window at 66c on both books, with Polymarket ticking to 67c at 8:25 PM and Kalshi following at 10:10 PM. The Angels leg drifted from 35c to 34c on Polymarket while Kalshi held 35c, and the Boston run line went 48c to 49c on Polymarket across five captures. That is a two-hour capture window on the night before the game, not a full-session move, and the rest of the board carries no snapshot history yet.
The cross-platform read is consensus rather than disagreement. Kalshi and Polymarket are identical on the Boston moneyline and one point apart on the Angels side, which is inside the noise. Kalshi carries the liquidity, with $1.9K on the Boston leg and $833 on the Angels leg against $411 per side on Polymarket, so Kalshi is the book setting this number. The prop board belongs to Zach Neto, who leads the Angels with 24 home runs and 69 RBIs while hitting .242 across 140 games: his 1-plus home run leg is the most-traded prop at 18c on $201, with 2-plus hits at 28c and 2-plus total bases at 46c. On the Boston side, Caleb Durbin at 1-plus hits trades at 65c.
When the Angels vs Red Sox Market Resolves
The moneyline resolves to the team that wins the game at Fenway Park on September 9, 2026, scheduled for 6:45 PM ET, paying $1 per share on the winning side with the losing side at $0. Run-line contracts settle on the final margin, full-game totals on combined runs scored by both clubs, and first-five-innings contracts on the score after five complete innings. A weather-shortened game settles on the official final once five innings are complete, or four and a half with Boston ahead, per MLB rules.
Key Angels vs Red Sox Catalysts
Starter gap: Bennett (3.34 ERA, 1.02 WHIP, 18 walks in 99.2 innings) against Johnson (5.17 ERA, 1.39 WHIP, 38 walks in 78.1 innings) is the widest pitching edge of the series.
Boston lineup availability: Contreras (26 home runs, 79 RBIs) hit the 10-day injured list on September 8 and Rafaela (.282) has been out since September 6.
Home split: Boston is 36-35 at Fenway Park against 44-31 on the road, which caps how far a home-favorite price should push.
Stakes asymmetry: Boston holds a wild card position with a magic number of 11, while the Angels have been eliminated and are 3-7 over their last ten.
First-inning concentration: the run-in-the-first market at 52c on $2.3K traded is the busiest side leg on the board, ahead of the Angels moneyline.
Series history: Boston has won four of the five meetings this season, including the September 7 opener 5-2.
Related Angels vs Red Sox Markets
The September 8 middle game went to the Angels 6-1 and the September 7 opener went to Boston 5-2, which is how the series arrived level. Boston's season-long stake trades on the Red Sox playoff market and the 2026 AL East winner board, with the conference version on the AL pennant market. Full team boards live at the Boston Red Sox hub and the Los Angeles Angels hub, and every game on the slate is indexed at the MLB hub.
Resolution Criteria
The moneyline resolves to the team that wins the Angels at Red Sox game played at Fenway Park on September 9, 2026, scheduled for 6:45 PM ET. Winning-side contracts pay $1 per share and losing-side contracts resolve at $0. Run-line contracts settle on the final margin of victory, full-game total contracts on the combined runs scored by both clubs, and first-five-innings contracts on the score after five complete innings. A game shortened by weather settles on the official final once five innings are complete, or four and a half innings with Boston leading, per MLB rules. If the game is postponed, Kalshi and Polymarket settle on the makeup date or void the contracts per each platform's published rules.
Key Factors
- Jake Bennett (9-6, 3.34 ERA, 1.02 WHIP, 18 walks in 99.2 innings) against Ryan Johnson (3-8, 5.17 ERA, 1.39 WHIP, 38 walks in 78.1 innings) is the widest starter gap of the series
- Willson Contreras (26 home runs, 79 RBIs) went on the 10-day injured list September 8 and Ceddanne Rafaela (.282) has been out since September 6, thinning the Boston lineup
- Boston is 36-35 at Fenway Park against 44-31 on the road, which limits how far the home-favorite price should push
- Boston holds a wild card position with a magic number of 11 while the Angels are eliminated, 19 games back in the AL West and 3-7 over their last ten
- The run-in-the-first-inning leg at 52c on $2.3K traded is the busiest side market on the board, ahead of the Angels moneyline leg
- Kalshi carries the liquidity at $1.9K on the Boston moneyline against $411 on Polymarket, so Kalshi is setting this number
What are the current Angels vs Red Sox odds?
As of the evening of September 8, 2026, Boston trades at 67c on both Kalshi and Polymarket and the Angels at 34.5c (35c Kalshi, 34c Polymarket). Roughly $10.2K in lifetime volume has traded across the two books on this game.
Who is favored in Angels vs Red Sox on September 9, 2026?
The Red Sox are the favorite at about a 67% implied probability, backed by Jake Bennett (3.34 ERA, 1.02 WHIP) against Ryan Johnson (5.17 ERA, 1.39 WHIP). Boston is 80-66 with a plus-84 run differential; the Angels are 55-90 and 25-46 on the road.
What are the Angels vs Red Sox spread and total?
Boston at -1.5 on the run line trades at 48.5c (48c Kalshi, 49c Polymarket) and the Angels at -1.5 sit at 26c. Over 7.5 runs is the most-traded total leg at 66c with $701 behind it, while over 8.5 runs prices at 58c.
Where can I trade the Angels vs Red Sox market?
Both Kalshi and Polymarket list this game, and the live board above shows the two books side by side. Kalshi carries the liquidity, with $1.9K on the Boston moneyline leg against $411 on Polymarket.
When does the Angels vs Red Sox market resolve?
It resolves when the game goes final at Fenway Park on September 9, 2026, first pitch 6:45 PM ET. Watch whether Boston fields Willson Contreras and Ceddanne Rafaela, both on the injured list, and the first-five-innings total at 4.5 runs, which isolates Bennett against Johnson before the bullpens take over.