MLB matchup analysis

Astros vs Rays Prediction, Odds and Model Pick

Friday, September 11, 2026 at Tropicana Field · 7:10 PM ET

Value Watch

LyDia prediction: Tampa Bay Rays moneyline

Lab Rating
7.8/10
Model lean
Rays 63.2%
Market probability
56.6%
Model edge
+6.6%
Best moneyline
-140
Sportsbooks checked
4
LyDia model
63.2%
Market
56.6%

The case for Tampa Bay Rays

Why LyDia leans Tampa Bay Rays
LyDia's model makes Tampa Bay Rays 63.2% to win. No single factor dominates — the starting pitcher matchup, recent bats tilt the same way, enough to lean Tampa Bay Rays even though it does not clear the bar for a high-confidence pick.

The case for Houston Astros

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

Why it is not official

Own bullpen carries risk: 6.8/10
The Tampa Bay Rays bullpen comes in tired. A lead after six innings is less safe than usual.

Why the setup score is what it is

Conviction: 4.11/10
LyDia leans toward Tampa Bay Rays, but not strongly enough to earn full conviction credit.
Pitching plan: 40/40
Drew Rasmussen rates 80 on LyDia'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: 33.75/50
Tampa Bay Rays's recent offensive form clearly outpaces Houston Astros's over the tracked windows.

Why the price is what it is

Team strength: 54.0%
Before any pitcher or bullpen adjustment, LyDia's team-strength model alone makes Tampa Bay Rays 54.0% to win. Everything below moves the price from this starting point.
Pitcher score gap: 7 points
The pitcher-score gap favors Tampa Bay Rays by 7 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: 54.0% -> 63.2%
Team strength alone had Tampa Bay Rays at 54.0%. After the pitcher and bullpen terms, the price is 63.2% -- the same number shown as Model Lean above.
The verdict Real value, not an official bet. The +6.6% edge on Tampa Bay Rays is genuine, but own bullpen carries risk: 6.8/10. If you play it, you are taking on risk LyDia's official card will not.
Read the full model output

Tampa Bay Rays is a value watch, not an official pick. LyDia projects 63.2% against a 56.6% no-vig market number, a 6.6% model edge at -140. Lab Rating 7.8/10: conviction 4.11, pitching plan 40, offense 33.75. Tampa Bay Rays's pen efficiency: Below average (4.0/10). It stayed a value watch under the stricter official-pick review. Lineup check: Tampa Bay Rays is a touch above its season form (+0.020 OPS); Houston Astros is a touch below its season form (-0.036 OPS).

Game information

MatchupHouston Astros at Tampa Bay Rays
DateFriday, September 11, 2026
First pitch7:10 PM ET
VenueTropicana Field
Starting pitchersMiguel Ullola vs Drew Rasmussen
WeatherGame-time forecast: 85°F, 24% precipitation chance, 5 mph wind from NW.

Starting pitcher matchup

Full Pitcher Matchup Tool →
Miguel UllolaAstros · RHP
vs
Drew RasmussenRays · RHP
MetricAstrosRays
Pitching planRole unknownTraditional starter
Expected innings4⅔5⅔
ThrowsRR
LyDia pitcher score (higher is better)7380
ERA (lower is better)3.862.88
WHIP (lower is better)0.860.91
K/9 (higher is better)12.99.2
K-BB% (higher is better)33.3%21.6%
K% (higher is better)37.0%26.1%
BB% (lower is better)3.7%4.5%
BB/9 (lower is better)1.31.6
HR/9 (lower is better)2.60.8
Ground-ball rate18.2%49.3%
Fly-ball rate81.8%50.7%

Pitcher edge: LyDia gives Drew Rasmussen a 7-point edge over Miguel Ullola, driven mainly by HR/9 (0.82 vs 2.57) and expected innings (5.7 vs 4.5).

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

Strikeout Projections Full strikeout projections →

Drew Rasmussen strikeouts
5.3 LyDia projected Ks
No K play · -0.3K difference is below LyDia's 0.7K threshold
Market 5.5K · O -104 / U -105 · 6 books

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

Astros are 6-4 in their last 10 and averaging 3.9 runs per game over the last 15 days; Rays are 5-5 in their last 10 and averaging 5.2 runs per game over the last 15 days. On the season Rays carry the better run differential per game (+0.38 against -0.27).

MetricAstrosRays
Last 106-45-5
Last 10 by venue (away team on the road, home team at home)7-3 on the road6-4 at home
OPS, last 15 days0.6890.753
wOBA, last 15 days (hot/cold read)0.3020.328
Runs per game, last 15 days3.95.2
K% last 15 days (lower is better)22.2%17.1%

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 daysAstrosRays
OPS0.688 (-0.037 vs szn)0.719 (-0.014 vs szn)
Runs per game4.04 (-0.465 vs szn)4.48 (-0.053 vs szn)
wOBA (model offense input)0.299 (-0.019 vs szn)0.316 (-0.007 vs szn)
K% (lower is better)23.7% (+1.9% vs szn)16.2% (-2.2% vs szn)

Over the last 30 days the Rays have been the better offense, 0.316 wOBA to 0.299.

Season profile

Full Stats page →
MetricAstrosRays
Record75-7287-59
Run differential / game (team quality)-0.27+0.38
Runs scored / game (offense, season)4.504.53
Runs allowed / game (defense, season, lower better)4.784.15
Season OPS0.7250.733
K% season (lower is better)21.7%18.4%
OPS vs opposing hand (season)0.7280.755

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 Rays are highlighted.

Astros
Combined risk
5.7 Normal
Fatigue
5.8 Normal
Efficiency
5.2 Average
Rays
Combined risk
6.8 Tired
Fatigue
6.3 Tired
Efficiency
4.0 Below average

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.

MetricAstrosRays
Fatigue5.8/10, Normal6.3/10, Tired
Efficiency5.2/10, Average4.0/10, Below average
Combined risk5.7/10, Normal6.8/10, Tired
Relief innings, last 7 days20.719.3
Back-to-back arms67
7-day ERA3.925.59
7-day WHIP1.311.40

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

Run total projection

Full Totals Projections →
LyDia projection
7.3
Market total
8.0
Projected away runs
2.4
Projected home runs
4.9
Over price
-105
Under price
-107
Houston Astros team total
2.4 projected
Line Not available · O Not available / U Not available
Market line pending
Tampa Bay Rays team total
4.9 projected
Line Not available · O Not available / U Not available
Market line pending

The model projects 0.7 runs below the market total. A research lean still requires a setup rating of at least 7.0/10. Team totals remain research-only until their graded sample is established.

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