MLB matchup analysis

Astros vs Athletics Prediction, Odds and Model Pick

Sunday, September 27, 2026 at Sutter Health Park · 3:05 PM ET

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Leo prediction: Houston Astros moneyline

Lab Rating
6.5/10
Model lean
Astros 73.8%
Market probability
63.5%
Model edge
+10.2%
Best moneyline
-185
Sportsbooks checked
9
Leo model
73.8%
Market
63.5%

The case for Houston Astros

Starting pitcher edge: 27 points
Leo gives Peter Lambert a 27-point edge over Seth Johnson, driven mainly by expected innings (5.4 vs 1.7) and BB/9 (3.4 vs 5.3).
Bats are hot: +0.030 wOBA
Houston Astros is outhitting its own season form over the last 15 days. Recent form is context, not a model input, but it points the same way here.

The case for Athletics

The case is thin
The model finds little going Athletics's way — it trails on the pitching plan, bullpen, and recent form. The main path to a Athletics win is variance.

Why it is not official

Setup quality below the bar
Lab Rating is 6.5/10, under the 7.2/10 required for an official pick.
Own bullpen carries risk: 7.4/10
The Houston Astros bullpen comes in tired. A lead after six innings is less safe than usual.

Why the setup score is what it is

Conviction: 9.38/10
Leo's win probability for Houston Astros (73.8%) is well clear of a coin flip -- this is a real, stated lean, not a guess.
Pitching plan: 21.33/40
Peter Lambert rates 66 on Leo's pitcher score, judged on its own merits (50-80 is the credited range). That is a strong start on its own, and it earns most or all of the available credit here.
Offense: 33.92/50
Houston Astros's recent offensive form clearly outpaces Athletics's over the tracked windows.

Why the price is what it is

Team strength: 47.0%
Before any pitcher or bullpen adjustment, Leo's team-strength model alone makes Houston Astros 47.0% to win. Everything below moves the price from this starting point.
Pitcher score gap: 29 points
The pitcher-score gap favors Houston Astros by 29 points. This is the biggest single mover of the price -- a large gap moves it a lot, a small gap barely moves it.
Bullpen adjustment: +0.033
The bullpen-fatigue gap between the two pens nudges the price toward Houston Astros. This moves the price less than the starting pitchers do, since a starter covers more of the game than the bullpen.
Net effect: 47.0% -> 73.8%
Team strength alone had Houston Astros at 47.0%. After the pitcher and bullpen terms, the price is 73.8% -- the same number shown as Model Lean above.
The verdict Worth monitoring, nothing more. The setup has pieces but does not add up to a bet at today's price.
Read the full model output

Houston Astros remains on the watchlist. Lab Rating 6.5/10: conviction 9.38, pitching plan 21.33, offense 33.92. Leo projects 73.8% against a 63.5% no-vig market number, a 10.2% model edge at -185. Houston Astros owns the starting pitcher edge by 29 points. Bullpen read: Elevated volatility. Houston Astros's pen efficiency: Effective (5.7/10). Bullpen fatigue moved this probability down 23.7 points from 97.4% (starting pitcher and team strength only) to 73.8%. Lineup check: Houston Astros is swinging a hot bat (+0.082 OPS); Athletics is near its season form (-0.018 OPS). Recent form supports this side and is included in the unified run projection.

Final result

Astros 9, Athletics 0

How the analysis held up

Houston Astros won, the side Leo's model favored.

Peter Lambert (Houston Astros), the starter Leo's pitcher score favored, actually outpitched Seth Johnson: 2.0 IP, 0 ER (0.00 ERA) against 1.2 IP, 0 ER (0.00 ERA). The edge held up. Both starters were sharp; the edge is a narrow one between two good outings.

The Houston Astros bullpen was flagged as elevated risk pregame (Tired). In relief it actually allowed 0 earned runs over 7.0 innings (0.00 ERA) — the risk read did not show up on the scoreboard tonight.

The Athletics bullpen was flagged as elevated risk pregame (High risk). In relief it actually allowed 9 earned runs over 7.1 innings (11.05 ERA) — the risk read showed up.

Game information

MatchupHouston Astros at Athletics
DateSunday, September 27, 2026
First pitch3:05 PM ET
VenueSutter Health Park
Starting pitchersPeter Lambert vs Seth Johnson
WeatherGame-time forecast: 80°F, 0% precipitation chance, 7 mph wind from SW.

Starting pitcher matchup

Full Pitcher Matchup Tool →
Peter LambertAstros · RHP
vs
Seth JohnsonAthletics · RHP
MetricAstrosAthletics
Pitching planTraditional starterOpener / bullpen game
Expected innings5⅓1⅔
ThrowsRR
Leo pitcher score (higher is better)6639
ERA (lower is better)3.825.88
WHIP (lower is better)1.251.69
K/9 (higher is better)8.910.7
K-BB% (higher is better)14.3%12.7%
K% (higher is better)23.2%25.3%
BB% (lower is better)8.9%12.7%
BB/9 (lower is better)3.45.3
HR/9 (lower is better)1.01.3
Ground-ball rate38.0%45.8%
Fly-ball rate62.0%54.2%

Pitcher edge: Leo gives Peter Lambert a 27-point edge over Seth Johnson, driven mainly by expected innings (5.4 vs 1.7) and BB/9 (3.4 vs 5.3).

How to read this: the scorecards above name the starters; every number lives in this table.

Strikeout Projections Full strikeout projections →

Peter Lambert strikeouts
6.0 Leo projected Ks
Official pick: OVER 2.5K · +3.7K difference
Market 2.5K · O +122 / U -159 · 2 books
Seth Johnson strikeouts
2.4 Leo projected Ks
No strikeout line posted when this page was generated

Same data source as the Pitcher Matchup Tool, where every starter on the slate is compared side by side.

Astros are 4-6 in their last 10 and averaging 4.8 runs per game over the last 15 days; Athletics are 3-7 in their last 10 and averaging 4.0 runs per game over the last 15 days. On the season Astros carry the better run differential per game (-0.20 against -1.47).

MetricAstrosAthletics
Last 104-63-7
Last 10 by venue (away team on the road, home team at home)5-5 on the road6-4 at home
OPS, last 15 days0.8130.703
wOBA, last 15 days (hot/cold read)0.3500.311
Runs per game, last 15 days4.84.0
K% last 15 days (lower is better)24.3%21.9%

Last 15 days only. Hot and cold streaks for all 30 teams live on the Stats page.

30-day offense

Full offense tool →
Last 30 daysAstrosAthletics
OPS0.753 (+0.021 vs szn)0.710 (-0.009 vs szn)
Runs per game4.32 (-0.209 vs szn)4.07 (-0.243 vs szn)
wOBA (model offense input)0.327 (+0.006 vs szn)0.315
K% (lower is better)23.2% (+1.3% vs szn)21.7% (-0.8% vs szn)

Over the last 30 days the Astros have been the better offense, 0.327 wOBA to 0.315.

Season profile

Full Stats page →
MetricAstrosAthletics
Record80-8164-97
Run differential / game (team quality)-0.20-1.47
Runs scored / game (offense, season)4.534.31
Runs allowed / game (defense, season, lower better)4.735.78
Season OPS0.7310.721
K% season (lower is better)21.9%22.4%
OPS vs opposing hand (season)0.7380.720

Season-long team quality, not recent form. Run differential and run environment come from the season standings; splits for all 30 teams live on the Stats page, including the run environment table.

Every team on today's slate, on any two axes you pick. Astros and Athletics are highlighted.

Astros
Combined risk
7.4 Tired
Fatigue
7.7 Tired
Efficiency
5.7 Effective
Athletics
Combined risk
8.5 High risk
Fatigue
7.0 Tired
Efficiency
2.0 Struggling

Risk is what the model actually uses: fatigue blended with how well the pen has pitched. High fatigue with high efficiency is a tired pen that is still getting outs.

MetricAstrosAthletics
Fatigue7.7/10, Tired7.0/10, Tired
Efficiency5.7/10, Effective2.0/10, Struggling
Combined risk7.4/10, Tired8.5/10, High risk
Relief innings, last 7 days30.725.7
Back-to-back arms54
7-day ERA3.237.36
7-day WHIP1.212.06

Fatigue measures workload. Efficiency measures recent run prevention. Combined risk is what the moneyline and totals systems use.

Run total projection

Full Totals Projections →
Leo projection
10.2
Market total
10.5
Projected away runs
4.7
Projected home runs
5.1
Over price
-103
Under price
-108
Houston Astros team total
4.7 projected
Line 5.5 · O -118 / U +108
Under research lean (-0.8)
Athletics team total
5.1 projected
Line 4.5 · O +125 / U -140
No team-total lean

The model and market are close. Team totals remain research-only until their graded sample is established.

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