MLB matchup analysis

Red Sox vs Pirates Prediction, Odds and Model Pick

Sunday, August 16, 2026 at PNC Park · 1:35 PM ET

Pass

LyDia decision: Pass on Red Sox vs Pirates

Lab Rating
5.0/10
Model lean
Pirates 67.7%
Market probability
49.5%
Model edge
+18.3%
Best moneyline
+102
Sportsbooks checked
9
LyDia model
67.7%
Market
49.5%

The case for Pittsburgh Pirates

Pitching plan edge: 10 points
LyDia gives the Pittsburgh Pirates pitching plan the edge over Patrick Sandoval (10 points on LyDia's pitcher score). Lake Bachar is projected for only 2⅓ innings, with the Pittsburgh Pirates bullpen covering the rest -- this compares the Pittsburgh Pirates blended starting-pitcher-and-bullpen quality against Patrick Sandoval's own line, not two starters directly.

The case for Boston Red Sox

Late-inning bullpen advantage
Pittsburgh Pirates relievers have a 4.76 ERA over the last 7 days; Boston Red Sox relievers have a 4.30. If this is still close after six innings, that gap favors Boston Red Sox.
Their bats are hot: +0.032 wOBA
Boston Red Sox is outhitting its own season form over the last 15 days.

Why it is not official

Setup quality below the bar
Lab Rating is 5.0/10, under the 8.0/10 required for an official pick.
Own bullpen carries risk: 7.4/10
The Pittsburgh Pirates bullpen comes in tired. A lead after six innings is less safe than usual.
Opponent is swinging it
The other lineup is +0.032 wOBA above its season form over the last 15 days.

Why the setup score is what it is

Bullpen: 4.22/20
LyDia does not see a meaningful bullpen edge for Pittsburgh Pirates once assigned innings are weighted.
Offense: 1.18/25
Pittsburgh Pirates's recent form does not clearly outpace Boston Red Sox'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

MatchupBoston Red Sox at Pittsburgh Pirates
DateSunday, August 16, 2026
First pitch1:35 PM ET
VenuePNC Park
Starting pitchersPatrick Sandoval vs Lake Bachar
WeatherGame-time forecast: 79°F, 19% precipitation chance, 9 mph wind from W.

Starting pitcher matchup

Full Pitcher Matchup Tool →
Patrick SandovalRed Sox · LHP
vs
Lake BacharPirates · RHP
MetricRed SoxPirates
Pitching planTraditional starterOpener / bullpen game
Expected innings52⅓
ThrowsLR
LyDia pitcher score (higher is better)5558
ERA (lower is better)3.303.97
WHIP (lower is better)1.701.08
K/9 (higher is better)8.79.3
K-BB% (higher is better)11.8%16.7%
K% (higher is better)21.3%25.2%
BB% (lower is better)9.6%8.5%
BB/9 (lower is better)3.93.2
HR/9 (lower is better)0.91.6
Ground-ball rate41.8%46.0%
Fly-ball rate58.2%54.0%

Pitching plan edge: LyDia gives the Pittsburgh Pirates pitching plan the edge over Patrick Sandoval (10 points on LyDia's pitcher score). Lake Bachar is projected for only 2⅓ innings, with the Pittsburgh Pirates bullpen covering the rest -- this compares the Pittsburgh Pirates blended starting-pitcher-and-bullpen quality against Patrick Sandoval's own line, not two starters directly.

Blended read: For the Pittsburgh Pirates, the bullpen is projected to throw more of the game than Lake Bachar (about 2⅓ innings for the starter), so LyDia grades that side on a whole-game effective ERA of 4.20 rather than Lake Bachar's own 3.97. Whole-game, that is 3.61 for the Boston Red Sox against 4.20 on the other side, so the blended read leans Boston Red Sox.

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 →

Patrick Sandoval strikeouts
6.3 LyDia projected Ks
Official pick: OVER 4.5K · +1.8K difference
Market 4.5K · O -150 / U +120 · 6 books
Lake Bachar strikeouts
2.1 LyDia 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.

Red Sox are 4-6 in their last 10, averaging 5.9 runs per game over the last 15 days, and swinging above their season form; Pirates are 3-7 in their last 10, averaging 3.8 runs per game over the last 15 days, and hitting below their season form. On the season Red Sox carry the better run differential per game (+0.70 against +0.20).

MetricRed SoxPirates
Last 104-63-7
Last 10 by venue (away team on the road, home team at home)6-4 on the road4-6 at home
OPS, last 15 days0.8080.648
wOBA, last 15 days (hot/cold read)0.3510.292
Runs per game, last 15 days5.93.8
K% last 15 days (lower is better)19.0%25.6%

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 daysRed SoxPirates
OPS0.790 (+0.068 vs szn)0.659 (-0.085 vs szn)
Runs per game5.55 (+1.113 vs szn)3.89 (-1.107 vs szn)
wOBA (model offense input)0.344 (+0.025 vs szn)0.294 (-0.035 vs szn)
K% (lower is better)20.9% (-0.8% vs szn)25.8% (+1.6% vs szn)

Over the last 30 days the Red Sox have been the better offense, 0.344 wOBA to 0.294. They are running hot against their own season line (+0.025 wOBA). Pirates are striking out at 25.8% over the window — something the opposing starter can lean on.

Season profile

Full Stats page →
MetricRed SoxPirates
Record66-5760-65
Run differential / game (team quality)+0.70+0.20
Runs scored / game (offense, season)4.445.00
Runs allowed / game (defense, season, lower better)3.744.80
Season OPS0.7220.744
K% season (lower is better)21.7%24.2%
OPS vs opposing hand (season)0.7070.691

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. Red Sox and Pirates are highlighted.

Red Sox
Combined risk
4.8 Normal
Fatigue
4.8 Normal
Efficiency
5.1 Average
Pirates
Combined risk
7.4 Tired
Fatigue
7.0 Tired
Efficiency
4.2 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.

MetricRed SoxPirates
Fatigue4.8/10, Normal7.0/10, Tired
Efficiency5.1/10, Average4.2/10, Below average
Combined risk4.8/10, Normal7.4/10, Tired
Relief innings, last 7 days23.022.7
Back-to-back arms55
7-day ERA4.304.76
7-day WHIP1.171.63

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
8.9
Market total
8.0
Projected away runs
6.1
Projected home runs
2.8
Over price
-113
Under price
+100
Boston Red Sox team total
6.1 projected
Line 4.5 · O +116 / U -139
Over research lean (+1.6)
Pittsburgh Pirates team total
2.8 projected
Line 3.5 · O -125 / U +100
Under research lean (-0.7)

The model projects 0.9 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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