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Early Preview Lineups: Projected Odds Posted 5 min read

San Diego Padres vs Colorado Rockies Preview

San Diego Padres visit Colorado Rockies at Coors Field. Randy Vásquez starts for the Padres against an undetermined Rockies pitcher

San Diego Padres at Colorado Rockies MLB game preview for April 21, 2026
SD
San Diego Padres
Randy Vásquez RHP
@
8:40 PM ET
Coors Field
COL
Colorado Rockies
Jimmy Herget ?HP
Last updated Tuesday, April 21, 2026
Final This game has finished. Read the recap for final score, model grades, and box score.

Key Facts

Matchup
San Diego Padres at Colorado Rockies
Date
Tuesday, April 21, 2026
First Pitch
8:40 PM ET
Venue
Coors Field
Probable Starters
Randy Vásquez (RHP) vs Jimmy Herget (?HP)
Lineups
Projected
Odds Snapshot
Apr 21, 8:41 PM ET
Last Updated
Apr 21, 6:10 PM ET

Betting Board

Snapshot Apr 21, 8:41 PM ET
Moneyline
SD -142
COL +135
Total
Over 11 -115
Under 11 -105
Run Line
SD -1.5 +104
COL +1.5 -125

Model Angles

NRFI Model
YRFI · 51%
-2.8% edge
Projected Total
4.1
model combined runs
Park Factor
1.25
Hitter friendly · HR 1.47
First Pitch Weather
83°F
9.5 mph SE
The San Diego Padres continue their road trip with a visit to Coors Field to face the Colorado Rockies in an 8:40 PM ET matchup. San Diego enters at 15-7 and riding a two-game winning streak, while the Rockies sit at 9-14 after dropping their last contest. Randy Vásquez takes the ball for the Padres, bringing a 2.49 ERA, 1.29 WHIP, and 10.38 strikeouts per nine innings into the assignment. Colorado has yet to announce its starting pitcher. The projected total stands at 4.1 runs, with San Diego expected to score 2.0 and Colorado 2.1. Weather conditions call for 82 degrees with 10 mph winds out of the southeast. Coors Field carries a park factor of 1.25 runs, historically favorable to offense.
  • Randy Vásquez owns a 2.49 ERA and 10.38 strikeouts per nine
  • Padres at 15-7 with two-game winning streak
  • Rockies have not announced their starting pitcher

Pitching Matchup

SD Away
Randy Vásquez
RHP · 1-0 · 4 GS
ERA
2.49
WHIP
1.29
K/9
10.38
IP
21.2
Career: 3.96 ERA · 1.38 WHIP · 6.12 K/9
NRFI: 70.8%
1st Inn ERA: 3.82
COL Home
?HP · undefined-undefined · undefined GS
ERA
undefined
WHIP
undefined
K/9
undefined
IP
undefined
Career: undefined ERA · undefined WHIP · undefined K/9
  • K projections: Randy Vásquez at 5.1 (line 4.5)
  • Jimmy Herget projected at 3.6 (line 5.5).
  • Randy Vásquez has a 70.8% career NRFI rate. No first-inning data available for Jimmy Herget.
  • This is a RHP vs ?HP matchup, creating potential platoon advantages in both lineups.

Strikeout Projections

Randy Vásquez vs COL
Proj: 5.1Line: 4.5
+0.6
Confidence:
Jimmy Herget vs SD
Proj: 3.6Line: 5.5
-1.9
Confidence:
View all K projections on SlateIQ

Our strikeout model weighs pitcher K rate, opponent lineup whiff tendency, park factors, and umpire zone size to project total strikeouts per starter.

Randy Vásquez (San Diego Padres) is projected for 5.1 strikeouts against a posted line of 4.5. The projection is close to the line with no actionable edge.
He faces a moderate-K lineup that strikes out at 22.0% with a 28.0% whiff rate.

Jimmy Herget (Colorado Rockies) is projected for 3.6 strikeouts against a posted line of 5.5. The projection sits 1.9 K below the line, giving the model an Under lean.
He faces a moderate-K lineup that strikes out at 22.0% with a 28.0% whiff rate.

The San Diego Padres lineup is more vulnerable to strikeouts in this matchup. Colorado Rockies batters K at 22.0%, San Diego Padres batters at 22.0%.

NRFI & First 5 Analysis

NRFI Model
50.7%
probability of YRFI
+-2.8%
market edge
Monitor
Market implied: 53.5%Model: 50.7%
First 5 Innings
2.3est. F5 runs
SD
2.49 ERA
5.3 inn/start
COL
— ERA
F5 lean: Slight COL
SD K Projection
Randy Vásquez
5.1proj
Line: 4.5
+0.6 NEUTRAL
Confidence
COL K Projection
Jimmy Herget
3.6proj
Line: 5.5
-1.9 UNDER
Confidence
Explore all model projections

Our NRFI model analyzes both starting pitchers' first-inning profiles, the top-of-order hitters in each lineup, the umpire's historical zone, and environmental factors to produce a probability estimate. For this game, the model assigns a 50.7% probability of no runs in the first inning, compared to the market's implied probability of 53.5%.

  • That creates a slim -2.8% edge on YRFI.
  • The best available line is NRFI -115 / YRFI -105 at FanDuel.
  • Home plate umpire Alex MacKay runs a average zone. See the umpire section below for full career data.
  • Our NRFI model sits at 17-23 (42.5%) on official picks this season.

Prop Edges

4 model signals detected
Jimmy Herget
Strikeouts Under 5.5
Hits (1+) Lean Hit 0.5
64.8%
Hits (1+) Lean Hit 0.5
64.2%
Home Run Strong 0.5
12.4%
See all today's picks and edges

Lineup & Matchup Breakdown

San Diego Padres Projected
K%: 22.0
Whiff rate: 28.0%Team page
Colorado Rockies Projected
K%: 22.0
2Mickey MoniakLRF
Whiff rate: 28.0%Team page
Batter vs Pitcher matchup tool

Lineups are projected as of this writing.

San Diego Padres K vulnerability: 22.0% strikeout rate, 28.0% whiff rate.

Colorado Rockies K vulnerability: 22.0% strikeout rate, 28.0% whiff rate.

Ballpark, Weather & Umpire

Coors Field
Run Factor1.25
HR Factor1.47
Full park profile
Home Plate Umpire
Alex MacKay
Slightly wide NRFI: 54.5% 77 games
Full umpire profile
Hourly Game Forecast
83°
8 PM
10 mph
SE
79°
9 PM
10 mph
N
73°
10 PM
4 mph
NNE
69°
11 PM
4 mph
NNE
  • Coors Field carries a 1.25 run factor (hitter-friendly).
  • Home run factor: 1.47 — the park elevates HR power.
  • Park notes: Extreme elevation (5280ft/Mile High); Thin air reduces drag; Humidor storage of baseballs.
  • First pitch forecast: 82F with 10 mph winds from the SE. Humidity: 6%.
  • Temperature drops from 82F at first pitch to 69F by the late innings.
  • Wind advisory: 10 mph winds from the SE may impact fly balls.
  • Home plate umpire: Alex MacKay.
  • Career NRFI rate: 54.5% across 77 games tracked.
  • Zone tendency: Slightly wide.
  • K factor: 1.051 (above average strikeouts in his games).

Run Projections & Total

  • Our projection model puts the total at 4.1 combined runs, with San Diego Padres projected for 2.0 and Colorado Rockies for 2.1.
  • That's 6.9 runs below the posted total of 11.0, suggesting a lean toward the Under.
  • The run projection is essentially a coin flip between these two teams.
The Bottom Line
San Diego's strong start to the season meets the uncertainty of Colorado's pitching plans at Coors Field. Vásquez brings solid numbers into a ballpark known for run scoring, while the Rockies remain without a confirmed starter.
This preview is generated from thecapper.io projection models and publicly available data. All projections are model estimates, not guarantees. Gamble responsibly. If you or someone you know has a gambling problem, call 1-800-GAMBLER.