MLB matchup analysis

Guardians vs Royals Prediction, Odds and Model Pick

Saturday, September 26, 2026 at Kauffman Stadium · 7:10 PM ET

Pass

Leo decision: Pass on Guardians vs Royals

Lab Rating
5.4/10
Model lean
Royals 60.3%
Market probability
49.2%
Model edge
+11.1%
Best moneyline
+102
Sportsbooks checked
9
Leo model
60.3%
Market
49.2%

The case for Kansas City Royals

Starting pitcher edge: 9 points
Leo gives Michael Wacha a 9-point edge over Tanner Bibee, driven mainly by ERA (3.32 vs 4.36) and expected innings (6.3 vs 5.7).

The case for Cleveland Guardians

Their bats are hot: +0.023 wOBA
Cleveland Guardians is outhitting its own season form over the last 15 days.
Team strength favors Cleveland Guardians
Before any pitcher or bullpen adjustment, Leo's own team-strength model has Cleveland Guardians ahead (59.4% to 38.9%). The pick still comes from Kansas City Royals once the pitcher and bullpen terms are applied.

Why it is not official

Below the 61.0% official gate
Win probability is 60.3%. Leo 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 5.4/10, under the 7.2/10 required for an official pick.
Own bullpen carries risk: 10.0/10
The Kansas City Royals bullpen comes in high risk. A lead after six innings is less safe than usual.

Why the setup score is what it is

Conviction: 2.65/10
Leo leans toward Kansas City Royals, but not strongly enough to earn full conviction credit.
Pitching plan: 29.33/40
Michael Wacha rates 72 on Leo'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: 22.27/50
Kansas City Royals's recent form does not clearly outpace Cleveland Guardians's.

Why the price is what it is

Team strength: 38.9%
Before any pitcher or bullpen adjustment, Leo's team-strength model alone makes Kansas City Royals 38.9% to win. Everything below moves the price from this starting point.
Pitcher score gap: 9 points
The pitcher-score gap favors Kansas City Royals by 9 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: -0.024
The bullpen-fatigue gap between the two pens nudges the price toward Cleveland Guardians. This moves the price less than the starting pitchers do, since a starter covers more of the game than the bullpen.
Net effect: 38.9% -> 60.3%
Team strength alone had Kansas City Royals at 38.9%. After the pitcher and bullpen terms, the price is 60.3% -- the same number shown as Model Lean above.
The verdict Leo 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.

Final result

Guardians 11, Royals 5

How the analysis held up

Cleveland Guardians won. Leo's model favored the other side.

Leo's two internal reads disagreed pregame by 32.2 points — the team-strength model favored Kansas City Royals, the run-projection model favored Cleveland Guardians. The run-projection model had the winner here.

Michael Wacha (Kansas City Royals), the starter Leo's pitcher score favored, actually outpitched Tanner Bibee: 6.1 IP, 2 ER (2.84 ERA) against 6.0 IP, 3 ER (4.50 ERA). The edge held up.

The Cleveland Guardians bullpen was flagged as elevated risk pregame (High risk). In relief it actually allowed 2 earned runs over 3.0 innings (6.00 ERA) — the risk read showed up.

The Kansas City Royals bullpen was flagged as elevated risk pregame (High risk). In relief it actually allowed 5 earned runs over 2.2 innings (16.88 ERA) — the risk read showed up. Note: 4 of the runs charged to the Kansas City Royals pitching staff overall were unearned — not something the bullpen's stuff should be blamed for.

Cleveland Guardians scored 11, 6 more than the 5 pregame projection.

Likely driver: the Kansas City Royals bullpen allowed 5 earned runs over 2.2 relief innings (16.88 ERA), which is exactly the risk flagged pregame, and Cleveland Guardians's offense scored 6 more runs than projected.

Game information

MatchupCleveland Guardians at Kansas City Royals
DateSaturday, September 26, 2026
First pitch7:10 PM ET
VenueKauffman Stadium
Starting pitchersTanner Bibee vs Michael Wacha
WeatherGame-time forecast: 71°F, 21% precipitation chance, 4 mph wind from E.

Starting pitcher matchup

Full Pitcher Matchup Tool →
Tanner BibeeGuardians · RHP
vs
Michael WachaRoyals · RHP
MetricGuardiansRoyals
Pitching planTraditional starterTraditional starter
Expected innings5⅔6⅓
ThrowsRR
Leo pitcher score (higher is better)6372
ERA (lower is better)4.363.32
WHIP (lower is better)1.221.11
K/9 (higher is better)7.17.1
K-BB% (higher is better)11.9%12.8%
K% (higher is better)19.0%19.5%
BB% (lower is better)7.1%6.7%
BB/9 (lower is better)2.62.4
HR/9 (lower is better)1.41.3
Ground-ball rate40.5%40.7%
Fly-ball rate59.5%59.3%

Pitcher edge: Leo gives Michael Wacha a 9-point edge over Tanner Bibee, driven mainly by ERA (3.32 vs 4.36) and expected innings (6.3 vs 5.7).

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

Strikeout Projections Full strikeout projections →

Tanner Bibee strikeouts
3.8 Leo projected Ks
No K play · +0.3K difference is below Leo's 0.7K threshold
Market 3.5K · O -122 / U +107 · 6 books
Michael Wacha strikeouts
3.9 Leo projected Ks
Official pick: OVER 3.5K · +0.8K difference
Market 3.5K · O -148 / U +130 · 6 books

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

Guardians are 8-2 in their last 10 and averaging 5.2 runs per game over the last 15 days; Royals are 2-8 in their last 10 and averaging 4.1 runs per game over the last 15 days. On the season Guardians carry the better run differential per game (+0.07 against -0.75).

MetricGuardiansRoyals
Last 108-22-8
Last 10 by venue (away team on the road, home team at home)7-3 on the road3-7 at home
OPS, last 15 days0.7500.708
wOBA, last 15 days (hot/cold read)0.3310.312
Runs per game, last 15 days5.24.1
K% last 15 days (lower is better)16.8%23.6%

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 daysGuardiansRoyals
OPS0.746 (+0.050 vs szn)0.740 (+0.023 vs szn)
Runs per game4.93 (+0.727 vs szn)4.52 (+0.251 vs szn)
wOBA (model offense input)0.328 (+0.019 vs szn)0.325 (+0.009 vs szn)
K% (lower is better)17.7% (-3.1% vs szn)20.7%

Over the last 30 days the Guardians have been the better offense, 0.328 wOBA to 0.325. They are running hot against their own season line (+0.019 wOBA).

Season profile

Full Stats page →
MetricGuardiansRoyals
Record84-7668-92
Run differential / game (team quality)+0.07-0.75
Runs scored / game (offense, season)4.204.27
Runs allowed / game (defense, season, lower better)4.125.02
Season OPS0.6910.717
K% season (lower is better)20.8%20.9%
OPS vs opposing hand (season)0.7010.726

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. Guardians and Royals are highlighted.

Guardians
Combined risk
9.2 High risk
Fatigue
10.0 High risk
Efficiency
6.7 Effective
Royals
Combined risk
10.0 High risk
Fatigue
8.9 High risk
Efficiency
2.8 Struggling

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.

MetricGuardiansRoyals
Fatigue10.0/10, High risk8.9/10, High risk
Efficiency6.7/10, Effective2.8/10, Struggling
Combined risk9.2/10, High risk10.0/10, High risk
Relief innings, last 7 days27.028.0
Back-to-back arms53
7-day ERA2.006.75
7-day WHIP1.071.71

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

Run total projection

Full Totals Projections →
Leo projection
9.4
Market total
10.5
Projected away runs
5.0
Projected home runs
4.1
Over price
+104
Under price
-115
Cleveland Guardians team total
5.0 projected
Line 4.5 · O +110 / U -135
No team-total lean
Kansas City Royals team total
4.1 projected
Line 3.5 · O -130 / U +110
No team-total lean

The model projects 1.1 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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