MLB matchup analysis

Tigers vs Pirates Prediction, Odds and Model Pick

Tuesday, August 18, 2026 at PNC Park · 6:40 PM ET

Pass

LyDia decision: Pass on Tigers vs Pirates

Lab Rating
6.0/10
Model lean
Tigers 59.0%
Market probability
42.9%
Model edge
+16.1%
Best moneyline
+134
Sportsbooks checked
9
LyDia model
59.0%
Market
42.9%

The case for Detroit Tigers

Late-inning bullpen advantage
Pittsburgh Pirates relievers have a 5.02 ERA over the last 7 days; Detroit Tigers relievers have a 3.81. If this is still close after six innings, that gap favors Detroit Tigers.

The case for Pittsburgh Pirates

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

Why it is not official

Below the 61.0% official gate
Win probability is 59.0%. 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 6.0/10, under the 8.0/10 required for an official pick.
Own bullpen carries risk: 6.3/10
The Detroit Tigers bullpen comes in tired. A lead after six innings is less safe than usual.

Why the setup score is what it is

Pitching plan: 0/20
No meaningful starting-pitcher edge favors Detroit Tigers in this matchup.
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

MatchupDetroit Tigers at Pittsburgh Pirates
DateTuesday, August 18, 2026
First pitch6:40 PM ET
VenuePNC Park
Starting pitchersKeider Montero vs Braxton Ashcraft
WeatherGame-time forecast: 77°F, 0% precipitation chance, 4 mph wind from W.

Starting pitcher matchup

Full Pitcher Matchup Tool →
Keider MonteroTigers · RHP
vs
Braxton AshcraftPirates · RHP
MetricTigersPirates
Pitching planTraditional starterTraditional starter
Expected innings5⅔6
ThrowsRR
LyDia pitcher score (higher is better)7976
ERA (lower is better)3.223.82
WHIP (lower is better)0.991.10
K/9 (higher is better)6.09.9
K-BB% (higher is better)11.1%21.3%
K% (higher is better)16.7%27.0%
BB% (lower is better)5.6%5.7%
BB/9 (lower is better)2.02.1
HR/9 (lower is better)0.91.3
Ground-ball rate43.6%53.9%
Fly-ball rate56.4%46.1%

Pitcher edge: LyDia gives Keider Montero a 3-point edge over Braxton Ashcraft, driven mainly by HR/9 (0.91 vs 1.27) and WHIP (0.99 vs 1.10).

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 →

Keider Montero strikeouts
3.5 LyDia projected Ks
No K play · +0.0K difference is below LyDia's 0.7K threshold
Market 3.5K · O -119 / U +110 · 5 books
Braxton Ashcraft strikeouts
5.0 LyDia projected Ks
No K play · -0.5K difference is below LyDia's 0.7K threshold
Market 5.5K · O -120 / U +107 · 5 books

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

Tigers are 5-5 in their last 10 and averaging 5.2 runs per game over the last 15 days; Pirates are 4-6 in their last 10, averaging 4.3 runs per game over the last 15 days, and hitting below their season form. On the season Tigers carry the better run differential per game (+0.69 against +0.21).

MetricTigersPirates
Last 105-54-6
Last 10 by venue (away team on the road, home team at home)8-2 on the road4-6 at home
OPS, last 15 days0.7370.674
wOBA, last 15 days (hot/cold read)0.3290.302
Runs per game, last 15 days5.24.3
K% last 15 days (lower is better)20.2%25.8%

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 daysTigersPirates
OPS0.784 (+0.056 vs szn)0.653 (-0.090 vs szn)
Runs per game5.81 (+1.231 vs szn)4.00 (-1.024 vs szn)
wOBA (model offense input)0.344 (+0.023 vs szn)0.293 (-0.036 vs szn)
K% (lower is better)19.8% (-2.7% vs szn)25.2% (+1.0% vs szn)

Over the last 30 days the Tigers have been the better offense, 0.344 wOBA to 0.293. They are running hot against their own season line (+0.023 wOBA). Pirates are striking out at 25.2% over the window — something the opposing starter can lean on.

Season profile

Full Stats page →
MetricTigersPirates
Record61-6461-66
Run differential / game (team quality)+0.69+0.21
Runs scored / game (offense, season)4.585.02
Runs allowed / game (defense, season, lower better)3.904.81
Season OPS0.7280.743
K% season (lower is better)22.5%24.2%
OPS vs opposing hand (season)0.7410.765

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. Tigers and Pirates are highlighted.

Tigers
Combined risk
6.3 Tired
Fatigue
6.4 Tired
Efficiency
5.2 Average
Pirates
Combined risk
9.8 High risk
Fatigue
9.4 High risk
Efficiency
4.3 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.

MetricTigersPirates
Fatigue6.4/10, Tired9.4/10, High risk
Efficiency5.2/10, Average4.3/10, Below average
Combined risk6.3/10, Tired9.8/10, High risk
Relief innings, last 7 days28.328.7
Back-to-back arms34
7-day ERA3.815.02
7-day WHIP1.341.43

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
8.3
Market total
8.0
Projected away runs
4.7
Projected home runs
3.2
Over price
-107
Under price
-105
Detroit Tigers team total
4.7 projected
Line 3.5 · O -110 / U -110
Over research lean (+1.2)
Pittsburgh Pirates team total
3.2 projected
Line 4.5 · O +114 / U -140
Under research lean (-1.3)

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

More games today

All matchups →

Every LyDia pick, graded in public

Free daily model card by email, or open today's full slate. Membership adds delivery before first pitch.

Today's picks Membership

Model outputs are not guarantees. LyDia provides analysis and education only. Every official pick remains visible on the Results page. 21+. If you or someone you know has a gambling problem, call 1-800-GAMBLER.