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Early Preview Lineups: Projected Odds Posted 6 min read

Atlanta Braves vs Seattle Mariners Preview

Atlanta (25-10, W3) visits Seattle (16-19, L3) at T-Mobile Park. JR Ritchie opposes Logan Gilbert in a low-scoring matchup with 4.7 total

Atlanta Braves at Seattle Mariners MLB game preview for May 4, 2026
ATL
Atlanta Braves
JR Ritchie RHP
@
9:40 PM ET
T-Mobile Park
SEA
Seattle Mariners
Logan Gilbert RHP
Last updated Monday, May 4, 2026
Final This game has finished. Read the recap for final score, model grades, and box score.

Key Facts

Matchup
Atlanta Braves at Seattle Mariners
Date
Monday, May 4, 2026
First Pitch
9:40 PM ET
Venue
T-Mobile Park
Probable Starters
JR Ritchie (RHP) vs Logan Gilbert (RHP)
Lineups
Projected
Odds Snapshot
May 4, 9:41 PM ET
Last Updated
May 4, 11:07 AM ET

Betting Board

Snapshot May 4, 9:41 PM ET
Moneyline
ATL +123
SEA -135
Total
Over 7.5 -114
Under 7.5 -106
Run Line
ATL +1.5 -188
SEA -1.5 +155

Model Angles

NRFI Model
NRFI · 58%
+4.6% edge
Projected Total
4.7
model combined runs
Park Factor
0.95
Neutral · HR 0.92
First Pitch Weather
Roof
Climate controlled
The Atlanta Braves carry a three-game winning streak and the best record in baseball into T-Mobile Park on Monday night, facing a Seattle Mariners team headed in the opposite direction. Atlanta sits at 25-10 and has won each of its last three contests, while Seattle has dropped three straight and finds itself under .500 at 16-19. JR Ritchie takes the mound for the Braves with a 2.92 ERA, 1.30 WHIP, and 8.03 strikeouts per nine innings. Logan Gilbert counters for Seattle with a 4.03 ERA, 1.29 WHIP, and 9.24 strikeouts per nine. The projected total sits at 4.7 runs in a pitcher-friendly environment with a 0.95 park factor. First pitch is scheduled for 9:40 PM ET under favorable conditions with 72-degree temperatures and calm winds.
  • Atlanta enters on a three-game winning streak at 25-10
  • Seattle has lost three consecutive games and sits 16-19
  • Projected total of 4.7 runs with 0.95 park factor

Pitching Matchup

ATL Away
JR Ritchie
RHP · 1-0 · 2 GS
ERA
2.92
WHIP
1.30
K/9
8.03
IP
12.1
Career: 2.92 ERA · 1.30 WHIP · 8.03 K/9
SEA Home
Logan Gilbert
RHP · 1-3 · 7 GS
ERA
4.03
WHIP
1.29
K/9
9.24
IP
38.0
Career: 3.60 ERA · 1.07 WHIP · 9.51 K/9
NRFI: 72.2%
1st Inn ERA: 3.85

On the season, JR Ritchie holds the ERA edge in this matchup. JR Ritchie carries a 2.92 ERA and 1.30 WHIP, while Logan Gilbert sits at 4.03 ERA and 1.29 WHIP.
Strikeout rates: JR Ritchie at 8.03 K/9, Logan Gilbert at 9.24 K/9.
K projections: JR Ritchie at 2.9 (line 4.5)
Logan Gilbert projected at 6.1 (line 5.5).
Logan Gilbert has a 72.2% career NRFI rate. No first-inning data available for JR Ritchie.
Both starters throw from the R side, limiting platoon splits for either lineup.

Strikeout Projections

JR Ritchie vs SEA
Proj: 2.9Line: 4.5
-1.6
Confidence:
Logan Gilbert vs ATL
Proj: 6.1Line: 5.5
+0.6
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.

JR Ritchie (Atlanta Braves) is projected for 2.9 strikeouts against a posted line of 4.5. The projection sits 1.6 K below the line, giving the model an Under lean.
He faces a high-K lineup that strikes out at 25.9% with a 28.0% whiff rate.

Logan Gilbert (Seattle Mariners) is projected for 6.1 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 23.5% with a 28.0% whiff rate.

The Seattle Mariners lineup is more vulnerable to strikeouts in this matchup. Seattle Mariners batters K at 25.9%, Atlanta Braves batters at 23.5%.

NRFI & First 5 Analysis

NRFI Model
57.8%
probability of NRFI
+4.6%
market edge
Monitor
Market implied: 53.3%Model: 57.8%
First 5 Innings
2.6est. F5 runs
ATL
2.92 ERA
6.0 inn/start
SEA
4.03 ERA
5.4 inn/start
F5 lean: Moderate ATL
ATL K Projection
JR Ritchie
2.9proj
Line: 4.5
-1.6 UNDER
Confidence
SEA K Projection
Logan Gilbert
6.1proj
Line: 5.5
+0.6 NEUTRAL
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 57.8% probability of no runs in the first inning, compared to the market's implied probability of 53.3%.

  • That creates a slim 4.6% edge on NRFI.
  • The best available line is NRFI -114 / YRFI -106 at FanDuel.
  • Home plate umpire Lance Barksdale runs a wide zone. See the umpire section below for full career data.
  • Our NRFI model sits at 40-39 (50.6%) on official picks this season.

Prop Edges

1 model signal detected
JR Ritchie
Strikeouts Under 4.5
See all today's picks and edges

Lineup & Matchup Breakdown

Atlanta Braves Projected
K%: 23.5
Whiff rate: 28.0%Team page
Seattle Mariners Projected
K%: 25.9
Whiff rate: 28.0%Team page
Batter vs Pitcher matchup tool

Lineups are projected as of this writing.

Atlanta Braves K vulnerability: 23.5% strikeout rate, 28.0% whiff rate.

Seattle Mariners K vulnerability: 25.9% strikeout rate, 28.0% whiff rate.

Ballpark, Weather & Umpire

T-Mobile Park
Run Factor0.95
HR Factor0.92
Full park profile
Home Plate Umpire
Lance Barksdale
Slightly tight NRFI: 45.5% 99 games
Full umpire profile
  • T-Mobile Park carries a 0.95 run factor (neutral).
  • Home run factor: 0.92 — the park suppresses HR power.
  • Park notes: Cool maritime climate; Lower wall in right field; Retractable roof.
  • Roof: Retractable.

Climate controlled. Roof expected closed. Standard 72F conditions, no wind factor.

  • Home plate umpire: Lance Barksdale.
  • Career NRFI rate: 45.5% across 99 games tracked.
  • Zone tendency: Slightly tight.
  • K factor: 0.962 (below average strikeouts in his games).

Run Projections & Total

  • Our projection model puts the total at 4.7 combined runs, with Atlanta Braves projected for 2.3 and Seattle Mariners for 2.4.
  • That's 2.8 runs below the posted total of 7.5, suggesting a lean toward the Under.
  • The run projection is essentially a coin flip between these two teams.
The Bottom Line
Atlanta brings superior form and record to Seattle, where a low-scoring affair is projected in a pitcher-friendly park. The Braves have momentum with three straight wins, while the Mariners search for answers during a three-game slide.
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.