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Detroit Tigers vs Boston Red Sox Preview

Detroit Tigers visit Boston Red Sox at Fenway Park with Framber Valdez facing Garrett Crochet in 4:35 PM matchup. Betting preview and analysis

Detroit Tigers at Boston Red Sox MLB game preview for April 19, 2026
DET
Detroit Tigers
Framber Valdez LHP
@
4:35 PM ET
Fenway Park
BOS
Boston Red Sox
Garrett Crochet LHP
Last updated Sunday, April 19, 2026
Final This game has finished. Read the recap for final score, model grades, and box score.

Key Facts

Matchup
Detroit Tigers at Boston Red Sox
Date
Sunday, April 19, 2026
First Pitch
4:35 PM ET
Venue
Fenway Park
Probable Starters
Framber Valdez (LHP) vs Garrett Crochet (LHP)
Lineups
Projected
Odds Snapshot
Apr 19, 4:35 PM ET
Last Updated
Apr 19, 11:10 AM ET

Betting Board

Snapshot Apr 19, 4:35 PM ET
Moneyline
DET +124
BOS -135
Total
Over 7 -110
Under 7 -110
Run Line
DET +1.5 -199
BOS -1.5 +163

Model Angles

NRFI Model
NRFI · 63%
+11.3% edge · top pick
Projected Total
5.2
model combined runs
Park Factor
1.08
Hitter friendly · HR 1.15
First Pitch Weather
47°F
13.3 mph WNW
The Detroit Tigers travel to Fenway Park to face the Boston Red Sox in a 4:35 PM ET contest featuring left-handers Framber Valdez and Garrett Crochet. Detroit arrives with an 11-10 record on a one-game winning streak, while Boston sits at 8-12 after dropping its last game. Valdez brings a 3.75 ERA and 1.29 WHIP with 4.88 strikeouts per nine innings to the mound. Crochet counters with a 7.58 ERA and 1.58 WHIP but offers a significantly higher strikeout rate at 10.42 per nine. The projected total sits at 5.2 runs with Detroit favored to score 2.8 and Boston 2.4. Conditions at Fenway include 46-degree temperatures with 14 mph northwest winds. The park factor stands at 1.08 runs. Jahmai Jones enters hitting .303 against left-handed pitching.
  • Valdez posts 3.75 ERA while Crochet carries 7.58 ERA
  • Crochet projects 5.3 strikeouts against 7.5 line suggests Under
  • NRFI shows 64 percent probability with 11.8 percent edge

Pitching Matchup

DET Away
Framber Valdez
LHP · 1-1 · 5 GS
ERA
3.41
WHIP
1.21
K/9
5.90
IP
29.0
Career: 3.37 ERA · 1.20 WHIP · 8.69 K/9
NRFI: 74.0%
1st Inn ERA: 4.03
BOS Home
Garrett Crochet
LHP · 2-2 · 5 GS
ERA
7.88
WHIP
1.63
K/9
11.25
IP
24.0
Career: 3.21 ERA · 1.12 WHIP · 11.62 K/9
NRFI: 82.8%
1st Inn ERA: 2.78

On the season, Framber Valdez holds the ERA edge in this matchup. Framber Valdez carries a 3.41 ERA and 1.21 WHIP, while Garrett Crochet sits at 7.88 ERA and 1.63 WHIP.
Strikeout rates: Framber Valdez at 5.90 K/9, Garrett Crochet at 11.25 K/9.
K projections: Framber Valdez at 4.7 (line 5.5)
Garrett Crochet projected at 5.3 (line 7.5).
First-inning scoring: Framber Valdez holds a 74.0% career NRFI rate, Garrett Crochet at 82.8%. Combined average: 78.4%.
Both starters throw from the L side, limiting platoon splits for either lineup.

Strikeout Projections

Framber Valdez vs BOS
Proj: 4.7Line: 5.5
-0.8
Confidence:
Garrett Crochet vs DET
Proj: 5.3Line: 7.5
-2.2
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.

Framber Valdez (Detroit Tigers) is projected for 4.7 strikeouts against a posted line of 5.5. 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.

Garrett Crochet (Boston Red Sox) is projected for 5.3 strikeouts against a posted line of 7.5. The projection sits 2.2 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 Detroit Tigers lineup is more vulnerable to strikeouts in this matchup. Boston Red Sox batters K at 22.0%, Detroit Tigers batters at 22.0%.

NRFI & First 5 Analysis

NRFI Model
63.0%
probability of NRFI
+11.3%
market edge
Strong Signal
Market implied: 51.7%Model: 63.0%
First 5 Innings
2.9est. F5 runs
DET
3.41 ERA
5.8 inn/start
BOS
7.88 ERA
4.8 inn/start
F5 lean: Strong DET
DET K Projection
Framber Valdez
4.7proj
Line: 5.5
-0.8 NEUTRAL
Confidence
BOS K Projection
Garrett Crochet
5.3proj
Line: 7.5
-2.2 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 63.0% probability of no runs in the first inning, compared to the market's implied probability of 51.7%.

  • That creates a strong 11.3% edge on NRFI.
  • The best available line is NRFI -107 / YRFI -122 at DraftKings.
  • This qualifies as a top pick in our publication system.
  • Home plate umpire Lance Barksdale runs a tight zone. See the umpire section below for full career data.
  • Our NRFI model sits at 16-20 (44.4%) on official picks this season.

Prop Edges

3 model signals detected
Garrett Crochet
Strikeouts Under 7.5
Hits (1+) Lean Hit 0.5
65.6%
Jahmai Jones
Home Run Very Strong 0.5
14.2%
See all today's picks and edges

Lineup & Matchup Breakdown

Detroit Tigers Projected
K%: 22.0
1Jahmai JonesRRF
Whiff rate: 28.0%Team page
Boston Red Sox Projected
K%: 22.0
2Roman AnthonyLRF
Whiff rate: 28.0%Team page
Batter vs Pitcher matchup tool

Lineups are projected as of this writing.

Detroit Tigers K vulnerability: 22.0% strikeout rate, 28.0% whiff rate.

Boston Red Sox K vulnerability: 22.0% strikeout rate, 28.0% whiff rate.

Ballpark, Weather & Umpire

Fenway Park
Run Factor1.08
HR Factor1.15
Full park profile
Home Plate Umpire
Lance Barksdale
Slightly tight NRFI: 46.2% 93 games
Full umpire profile
Hourly Game Forecast
47°
4 PM
13 mph
WNW
45°
5 PM
12 mph
WNW
43°
6 PM
11 mph
NW
40°
7 PM
16 mph
WNW
  • Fenway Park carries a 1.08 run factor (hitter-friendly).
  • Home run factor: 1.15 — the park elevates HR power.
  • Park notes: Green Monster (37ft wall in left field); Pesky's Pole (302ft in right field); Triangle in center field.
  • First pitch forecast: 46F with 13 mph winds from the WNW. Humidity: 85%.
  • Temperature drops from 46F at first pitch to 40F by the late innings.
  • Wind advisory: 13 mph winds from the WNW may impact fly balls.
  • Home plate umpire: Lance Barksdale.
  • Career NRFI rate: 46.2% across 93 games tracked.
  • Zone tendency: Slightly tight.
  • K factor: 0.952 (below average strikeouts in his games).

Run Projections & Total

  • Our projection model puts the total at 5.2 combined runs, with Detroit Tigers projected for 2.8 and Boston Red Sox for 2.4.
  • That's 1.8 runs below the posted total of 7, suggesting a lean toward the Under.
  • The run projection favors Detroit Tigers by 0.4 runs.
The Bottom Line
This lefty-lefty matchup features contrasting profiles with Valdez offering steadier ratios against Crochet's elevated ERA but superior strikeout upside. The low total projection and strong NRFI probability reflect expectations for limited scoring at a chilly Fenway Park.
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.