MLB matchup analysis

Cubs vs Nationals Prediction, Odds and Model Pick

Thursday, August 13, 2026 at Nationals Park · 4:05 PM ET

Pass

LyDia decision: Pass on Cubs vs Nationals

Lab Rating
4.9/10
Model lean
Cubs 59.2%
Market probability
57.9%
Model edge
+1.4%
Best moneyline
-143
Sportsbooks checked
9
LyDia model
59.2%
Market
57.9%

The case for Chicago Cubs

Late-inning bullpen advantage
Washington Nationals relievers have a 4.05 ERA over the last 7 days; Chicago Cubs relievers have a 3.63. If this is still close after six innings, that gap favors Chicago Cubs.

The case for Washington Nationals

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

Why it is not official

Below the 61.0% official gate
Win probability is 59.2%. 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 4.9/10, under the 8.0/10 required for an official pick.

Why the setup score is what it is

Pitching plan: 0/26
No meaningful starting-pitcher edge favors Chicago Cubs 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

MatchupChicago Cubs at Washington Nationals
DateThursday, August 13, 2026
First pitch4:05 PM ET
VenueNationals Park
Starting pitchersKevin Gausman vs Cade Cavalli
WeatherGame-time forecast: 92°F, 0% precipitation chance, 8 mph wind from W.

Starting pitcher matchup

Full Pitcher Matchup Tool →
Kevin GausmanCubs · RHP
vs
Cade CavalliNationals · RHP
MetricCubsNationals
Pitching planTraditional starterTraditional starter
Expected innings5⅔5
ThrowsRR
LyDia pitcher score (higher is better)6467
ERA (lower is better)4.293.57
WHIP (lower is better)1.261.30
K/9 (higher is better)8.89.9
K-BB% (higher is better)16.6%18.5%
K% (higher is better)23.1%25.5%
BB% (lower is better)6.5%7.1%
BB/9 (lower is better)2.52.7
HR/9 (lower is better)1.11.0
Ground-ball rate45.3%58.6%
Fly-ball rate54.7%41.4%

Pitcher edge: LyDia gives Cade Cavalli a 3-point edge over Kevin Gausman, driven mainly by K/9 (9.9 vs 8.8) and ERA (3.57 vs 4.29).

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 →

Kevin Gausman strikeouts
4.9 LyDia projected Ks
No K play · +0.4K difference is below LyDia's 0.7K threshold
Market 4.5K · O -150 / U +124 · 6 books
Cade Cavalli strikeouts
5.6 LyDia projected Ks
No K play · +0.1K difference is below LyDia's 0.7K threshold
Market 5.5K · O +118 / U -140 · 6 books

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

Cubs are 8-2 in their last 10 and averaging 5.4 runs per game over the last 15 days; Nationals are 4-6 in their last 10, averaging 4.4 runs per game over the last 15 days, and hitting below their season form. On the season Cubs carry the better run differential per game (+0.95 against +0.13).

MetricCubsNationals
Last 108-24-6
Last 10 by venue (away team on the road, home team at home)7-3 on the road6-4 at home
OPS, last 15 days0.7850.715
wOBA, last 15 days (hot/cold read)0.3430.317
Runs per game, last 15 days5.44.4
K% last 15 days (lower is better)21.3%22.1%

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 daysCubsNationals
OPS0.810 (+0.049 vs szn)0.807 (+0.038 vs szn)
Runs per game6.00 (+0.760 vs szn)5.56 (+0.191 vs szn)
wOBA (model offense input)0.355 (+0.019 vs szn)0.353 (+0.016 vs szn)
K% (lower is better)23.0% (+1.3% vs szn)21.8%

Over the last 30 days the Cubs have been the better offense, 0.355 wOBA to 0.353. They are running hot against their own season line (+0.019 wOBA).

Season profile

Full Stats page →
MetricCubsNationals
Record71-5059-63
Run differential / game (team quality)+0.95+0.13
Runs scored / game (offense, season)5.245.37
Runs allowed / game (defense, season, lower better)4.295.24
Season OPS0.7610.769
K% season (lower is better)21.7%21.5%
OPS vs opposing hand (season)0.7430.760

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. Cubs and Nationals are highlighted.

Cubs
Combined risk
5.6 Normal
Fatigue
5.9 Normal
Efficiency
5.6 Effective
Nationals
Combined risk
8.0 Tired
Fatigue
8.1 Tired
Efficiency
5.3 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.

MetricCubsNationals
Fatigue5.9/10, Normal8.1/10, Tired
Efficiency5.6/10, Effective5.3/10, Average
Combined risk5.6/10, Normal8.0/10, Tired
Relief innings, last 7 days22.326.7
Back-to-back arms54
7-day ERA3.634.05
7-day WHIP1.121.16

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
10.8
Market total
8.5
Projected away runs
5.5
Projected home runs
4.5
Over price
-110
Under price
+100
Chicago Cubs team total
5.5 projected
Line 4.5 · O -115 / U -103
Over research lean (+1.0)
Washington Nationals team total
4.5 projected
Line 3.5 · O -118 / U +100
Over research lean (+1.0)

The model projects 2.3 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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