MLB matchup analysis

Rockies vs White Sox Prediction, Odds and Model Pick

Sunday, September 27, 2026 at Rate Field · 3:10 PM ET

Pass

Leo decision: Pass on Rockies vs White Sox

Lab Rating
4.1/10
Model lean
White Sox 71.0%
Market probability
59.3%
Model edge
+11.8%
Best moneyline
-155
Sportsbooks checked
9
Leo model
71.0%
Market
59.3%

The case for Chicago White Sox

Starting pitcher edge: 17 points
Leo gives Anthony Kay a 17-point edge over Kyle Freeland, driven mainly by ERA (4.44 vs 6.65) and HR/9 (1.20 vs 1.93).
Bats are hot: +0.012 wOBA
Chicago White Sox 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 Colorado Rockies

Late-inning bullpen advantage
Chicago White Sox relievers have a 5.40 ERA over the last 7 days; Colorado Rockies relievers have a 3.81. If this is still close after six innings, that gap favors Colorado Rockies.
Their bats are hot: +0.011 wOBA
Colorado Rockies is outhitting its own season form over the last 15 days.

Why it is not official

Setup quality below the bar
Lab Rating is 4.1/10, under the 7.2/10 required for an official pick.
Own bullpen carries risk: 9.7/10
The Chicago White Sox bullpen comes in high risk. A lead after six innings is less safe than usual.

Why the setup score is what it is

Conviction: 8.02/10
Leo's win probability for Chicago White Sox (71.0%) is well clear of a coin flip -- this is a real, stated lean, not a guess.
Pitching plan: 10.67/40
Anthony Kay rates 59 on Leo's pitcher score, judged on its own merits (50-80 is the credited range). Average or below by that measure, so it earns little or none of the available credit here -- independent of who the opponent is throwing.
Offense: 22.08/50
Chicago White Sox's recent form does not clearly outpace Colorado Rockies's.

Why the price is what it is

Team strength: 56.5%
Before any pitcher or bullpen adjustment, Leo's team-strength model alone makes Chicago White Sox 56.5% to win. Everything below moves the price from this starting point.
Pitcher score gap: 15 points
The pitcher-score gap favors Chicago White Sox by 15 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: -0.057
The bullpen-fatigue gap between the two pens nudges the price toward Colorado Rockies. This moves the price less than the starting pitchers do, since a starter covers more of the game than the bullpen.
Net effect: 56.5% -> 71.0%
Team strength alone had Chicago White Sox at 56.5%. After the pitcher and bullpen terms, the price is 71.0% -- 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

Rockies 2, White Sox 4

How the analysis held up

Chicago White Sox won, the side Leo's model favored.

Anthony Kay (Chicago White Sox), the starter Leo's pitcher score favored, actually outpitched Kyle Freeland: 5.0 IP, 1 ER (1.80 ERA) against 4.0 IP, 4 ER (9.00 ERA). The edge held up.

The Colorado Rockies bullpen was flagged as elevated risk pregame (Tired). In relief it actually allowed 0 earned runs over 4.0 innings (0.00 ERA) — the risk read did not show up on the scoreboard tonight.

The Chicago White Sox bullpen was flagged as elevated risk pregame (High risk). In relief it actually allowed 1 earned run over 4.0 innings (2.25 ERA) — the risk read did not show up on the scoreboard tonight.

Game information

MatchupColorado Rockies at Chicago White Sox
DateSunday, September 27, 2026
First pitch3:10 PM ET
VenueRate Field
Starting pitchersKyle Freeland vs Anthony Kay
WeatherGame-time forecast: 61°F, 0% precipitation chance, 6 mph wind from NE.

Starting pitcher matchup

Full Pitcher Matchup Tool →
Kyle FreelandRockies · LHP
vs
Anthony KayWhite Sox · LHP
MetricRockiesWhite Sox
Pitching planTraditional starterTraditional starter
Expected innings5⅓5
ThrowsLL
Leo pitcher score (higher is better)4259
ERA (lower is better)6.654.44
WHIP (lower is better)1.521.37
K/9 (higher is better)7.27.3
K-BB% (higher is better)12.9%10.3%
K% (higher is better)17.6%18.2%
BB% (lower is better)4.7%7.9%
BB/9 (lower is better)1.93.2
HR/9 (lower is better)1.91.2
Ground-ball rate50.3%50.6%
Fly-ball rate49.7%49.4%

Pitcher edge: Leo gives Anthony Kay a 17-point edge over Kyle Freeland, driven mainly by ERA (4.44 vs 6.65) and HR/9 (1.20 vs 1.93).

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

Strikeout Projections Full strikeout projections →

Kyle Freeland strikeouts
4.8 Leo projected Ks
No K play · +0.3K difference is below Leo's 0.7K threshold
Market 4.5K · O +128 / U -145 · 6 books
Anthony Kay strikeouts
4.6 Leo projected Ks
Official pick: OVER 3.5K · +1.1K difference
Market 3.5K · O +110 / U -123 · 4 books

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

Rockies are 2-8 in their last 10 and averaging 4.4 runs per game over the last 15 days; White Sox are 6-4 in their last 10 and averaging 6.0 runs per game over the last 15 days. On the season White Sox carry the better run differential per game (+0.35 against -1.19).

MetricRockiesWhite Sox
Last 102-86-4
Last 10 by venue (away team on the road, home team at home)1-9 on the road5-5 at home
OPS, last 15 days0.7690.748
wOBA, last 15 days (hot/cold read)0.3360.333
Runs per game, last 15 days4.46.0
K% last 15 days (lower is better)21.4%25.4%

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 daysRockiesWhite Sox
OPS0.733 (-0.006 vs szn)0.700 (-0.026 vs szn)
Runs per game4.11 (-0.535 vs szn)4.66 (-0.135 vs szn)
wOBA (model offense input)0.3210.313 (-0.008 vs szn)
K% (lower is better)23.1%25.2% (+1.1% vs szn)

Over the last 30 days the Rockies have been the better offense, 0.321 wOBA to 0.313. White Sox are striking out at 25.2% over the window — something the opposing starter can lean on.

Season profile

Full Stats page →
MetricRockiesWhite Sox
Record58-10383-78
Run differential / game (team quality)-1.19+0.35
Runs scored / game (offense, season)4.644.79
Runs allowed / game (defense, season, lower better)5.834.44
Season OPS0.7390.726
K% season (lower is better)22.8%24.1%
OPS vs opposing hand (season)0.7130.748

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. Rockies and White Sox are highlighted.

Rockies
Combined risk
7.8 Tired
Fatigue
7.9 Tired
Efficiency
5.3 Average
White Sox
Combined risk
9.7 High risk
Fatigue
9.3 High risk
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.

MetricRockiesWhite Sox
Fatigue7.9/10, Tired9.3/10, High risk
Efficiency5.3/10, Average4.2/10, Below average
Combined risk7.8/10, Tired9.7/10, High risk
Relief innings, last 7 days26.033.3
Back-to-back arms43
7-day ERA3.815.40
7-day WHIP1.231.35

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
8.2
Market total
8.5
Projected away runs
3.8
Projected home runs
4.0
Over price
+106
Under price
-110
Colorado Rockies team total
3.8 projected
Line 3.5 · O -108 / U -105
No team-total lean
Chicago White Sox team total
4.0 projected
Line 4.5 · O +104 / U -120
No team-total lean

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

More games today

All matchups →

Every Leo 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. Leo 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.