MLB matchup analysis

Astros vs Padres Prediction, Odds and Model Pick

Friday, August 7, 2026 at Petco Park · 9:40 PM ET

Pass

LyDia decision: Pass on Astros vs Padres

Lab Rating
2.8/10
Model lean
Padres 51.7%
Market probability
52.2%
Model edge
-0.4%
Best moneyline
-111
Sportsbooks checked
9
LyDia model
51.7%
Market
52.2%

The case for San Diego Padres

Starting pitcher edge: 28 points
LyDia gives Robbie Ray a 28-point edge over Ronel Blanco, driven mainly by HR/9 (1.10 vs 3.07) and ERA (3.08 vs 7.36).
Bats are hot: +0.039 OPS
San Diego Padres 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 Houston Astros

Late-inning bullpen advantage
San Diego Padres relievers have a 3.57 ERA over the last 7 days; Houston Astros relievers have a 1.29. San Diego Padres also have 8 arms pitching on back-to-back days, against 5 for Houston Astros. If this is still close after six innings, that gap favors Houston Astros.
Their bats are hot: +0.081 OPS
Houston Astros is outhitting its own season form over the last 15 days.

Why it is not official

Below the 61.0% official gate
Win probability is 51.7%. LyDia does not make a game official below 61.0%, no matter how good the price is. This is a value spot, not a high-confidence winner.
Setup quality below the bar
Lab Rating is 2.8/10, under the 8.0/10 required for an official pick.
Own bullpen carries risk: 7.7/10
The San Diego Padres bullpen comes in tired. A lead after six innings is less safe than usual.

Why the setup score is what it is

Conviction: 0/35
LyDia's own win probability for San Diego Padres (51.7%) is close enough to a coin flip that the rating credits no conviction at all — credit only starts above 53%.
Bullpen: 4.43/20
LyDia does not see a meaningful bullpen edge for San Diego Padres once assigned innings are weighted.
Offense: 3.75/25
San Diego Padres's recent form does not clearly outpace Houston Astros's.
The verdict LyDia passes. The combined Lab Rating did not clear the official threshold.
Read the full model output

The combined Lab Rating did not clear the official threshold.

Game information

MatchupHouston Astros at San Diego Padres
DateFriday, August 7, 2026
First pitch9:40 PM ET
VenuePetco Park
Starting pitchersRonel Blanco vs Robbie Ray
WeatherGame-time forecast: 75°F, 0% precipitation chance, 7 mph wind from NW.

Starting pitcher matchup

Full Pitcher Matchup Tool →
Ronel BlancoAstros · RHP
vs
Robbie RayPadres · LHP
MetricAstrosPadres
Pitching planTraditional starterTraditional starter
Expected innings55⅔
ThrowsRL
LyDia pitcher score (higher is better)4068
ERA (lower is better)7.363.08
WHIP (lower is better)1.301.29
K/9 (higher is better)9.87.9
K-BB% (higher is better)12.9%9.8%
K% (higher is better)25.8%20.9%
BB% (lower is better)12.9%11.1%
BB/9 (lower is better)4.94.2
HR/9 (lower is better)3.11.1
Ground-ball rate48.1%38.6%
Fly-ball rate51.9%61.4%

Pitcher edge: LyDia gives Robbie Ray a 28-point edge over Ronel Blanco, driven mainly by HR/9 (1.10 vs 3.07) and ERA (3.08 vs 7.36).

How to read this: the scorecards above name the starters; every number lives in this table. Highlighted cells mark a gap big enough to matter. K% and BB% are strikeout and walk rate as a share of batters faced -- K-BB% is the two combined into one skill number. HR/9 is home runs allowed per nine innings. Ground-ball and fly-ball rate are neither good nor bad on their own: high ground-ball pitchers trade strikeouts for double plays and fewer home runs, and on this data source the two rates are complementary (they add to 100%), not independent reads.

Strikeout Projections Full strikeout projections →

Ronel Blanco strikeouts
Not available LyDia projected Ks
Market 4.5K · O -113 / U -110 · 6 books
Robbie Ray strikeouts
4.7 LyDia projected Ks
No K play · +0.2K difference is below LyDia's 0.7K threshold
Market 4.5K · O -146 / U +135 · 6 books

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

Both sides arrive in similar form. Astros are 7-3 in their last 10, averaging 5.6 runs per game over the last 15 days, and swinging above their season form; Padres are 7-3 in their last 10, averaging 5.0 runs per game over the last 15 days, and swinging above their season form. Season run differential separates them by almost nothing (-0.22 against -0.11).

MetricAstrosPadres
Last 107-37-3
Last 10 by venue (away team on the road, home team at home)6-4 on the road7-3 at home
OPS, last 15 days0.8190.735
Runs per game, last 15 days5.65.0
K% last 15 days (lower is better)22.1%19.4%

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 daysAstrosPadres
OPS0.784 (+0.046 vs szn)0.784 (+0.088 vs szn)
Runs per game5.00 (+0.345 vs szn)5.56 (+1.327 vs szn)
wOBA (model offense input)0.343 (+0.019 vs szn)0.346 (+0.038 vs szn)
K% (lower is better)21.1%18.6% (-3.4% vs szn)

Over the last 30 days the Padres have been the better offense, 0.346 wOBA to 0.343. They are running hot against their own season line (+0.038 wOBA).

Season profile

Full Stats page →
MetricAstrosPadres
Record59-5760-56
Run differential / game (team quality)-0.22-0.11
Runs scored / game (offense, season)4.664.23
Runs allowed / game (defense, season, lower better)4.874.34
Season OPS0.7380.696
K% season (lower is better)21.5%22.0%
OPS vs opposing hand (season)0.7030.703

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 Padres are highlighted.

Astros
Combined risk
4.8 Normal
Fatigue
6.2 Tired
Efficiency
7.8 Dominant
Padres
Combined risk
7.7 Tired
Fatigue
8.1 Tired
Efficiency
5.8 Effective

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.

MetricAstrosPadres
Fatigue6.2/10, Tired8.1/10, Tired
Efficiency7.8/10, Dominant5.8/10, Effective
Combined risk4.8/10, Normal7.7/10, Tired
Relief innings, last 7 days21.035.3
Back-to-back arms58
7-day ERA1.293.57
7-day WHIP0.621.02

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
10.3
Market total
8.5
Projected away runs
4.9
Projected home runs
4.5
Over price
-105
Under price
-107
Houston Astros team total
4.9 projected
Line 3.5 · O -140 / U +116
Over research lean (+1.4)
San Diego Padres team total
4.5 projected
Line 4.5 · O +118 / U -140
No team-total lean

The model projects 1.8 runs above 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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