ATL vs BOS prediction for May 28, 2026: Our Monte Carlo simulation ran 10,000 game iterations and projects BOS 4.6 - ATL 4.2. BOS is favored with a 55.9% win probability. The run line is 1.5 and the total is 6.5. Model projects 8.8 total runs.
BOS
4.6
Projected Score
VS
O/U 6.5
ATL
4.2
Projected Score
Win Probability
BOSATL
+1.5
Run Line (BOS)
6.5
Total Line
10,000
Simulations
Calibrated accuracy at this confidence: 53.9% (2,300 games)
Projected Runs Range 10th – 90th percentile
ATL
246
BOS
357
Projected
BOS 4.6 — ATL 4.2
Actual
BOS 2 — ATL 10
Starting Pitcher Matchup
Chris Sale L
ATL
SL41%79 mph38% whiff
FF39%95 mph20% whiff
CH12%87 mph33% whiff
Payton Tolle L
BOS
FF45%96 mph24% whiff
SI24%95 mph10% whiff
FC16%89 mph19% whiff
Weather Impact
Fenway Park
68°F4 mph wind
HR: 1.031 Total: 1.017
neutral
Bullpen Comparison
ATL
2.45ERA
2.84FIP
9.80K/9
2.57BB/9
0.99WHIP
BOS
3.75ERA
4.22FIP
9.12K/9
3.43BB/9
1.26WHIP
Betting Edges
RUN_LINE HOME +1.5
-28.3% EV
-164
TOTAL UNDER 6.5
-28.1% EV
+100
F5_ML AWAY
-25.4% EV
-143
RUN_LINE AWAY -1.5
-22.1% EV
+136
F5_ML HOME
+20.0% EV
+114
ML AWAY
-19.1% EV
-133
First 5 Innings & NRFI
ATL F5
2.0 runs
33.4% win
BOS F5
2.6 runs
50.4% win
F5 Total
4.6
NRFI
56.9%
YRFI
43.1%
Avg 1st Inn Runs
0.90
HR Spotlight
Avg HRs
1.8
Over 0.5 HR
84%
Over 1.5 HR
54%
No HR
16%
Willson Contreras BOS22.2%
ISO: 0.348 | Barrel: 13.6% | vs Chris Sale | Park: 1.08x Platoon: 1.12x
Matt Olson ATL18.8%
ISO: 0.277 | Barrel: 16.7% | vs Payton Tolle | Park: 1.08x
Austin Riley ATL13.4%
ISO: 0.108 | Barrel: 8.3% | vs Payton Tolle | Park: 1.08x Platoon: 1.12x
Pitcher Strikeout Projections
Chris Sale
0.0 K projected
ATL | K/9: 0.0
Payton Tolle
0.0 K projected
BOS | K/9: 0.0
Injury Report
ATL8 injured
Spencer Schwellenbach SP60-DAY-IL
Drake Baldwin C10-DAY-IL
AJ Smith-Shawver SP60-DAY-IL
Hurston Waldrep SP60-DAY-IL
Kyle Farmer DH10-DAY-IL
Joe Jimenez RP60-DAY-IL
+2 more
BOS8 injured
Garrett Whitlock RP15-DAY-IL
Triston Casas 1B60-DAY-IL
Patrick Sandoval SP60-DAY-IL
Garrett Crochet SP15-DAY-IL
Roman Anthony LF10-DAY-IL
Romy Gonzalez 1B60-DAY-IL
+2 more
AI Intelligence Analysis
LEAN +1YELLOW ZONE56.6% WR (n=166)
BOS home underdog shows +15.1% edge (53.8% win prob). Pitcher matchup favors BOS: Payton Tolle (9.7 K/9, B grade command) vs Chris Sale (10.4 K/9, B grade stuff). Both aces, favoring under-scoring environment—but market has priced BOS at +114 odds (46.7% implied), giving BOS 7.1% edge on win probability. Home underdog zone shows positive WR (56.6%, n=166). LEAN BOS ML as home dog in favorable zone.
Key Factors
- Pitcher mismatch slightly favors ATL (Sale 10.4 K/9 vs Tolle 9.7 K/9), but both B-grade arms—low-run environment likely
- Home underdog (BOS) at +114 is in profitable zone: MLB|ml|home (56.6% WR, n=166) vs away ML RED zone
- Fenway park factor 1.017x with neutral wind (2.9mph tail) and 67.7F—no park advantage
- BOS recent form unknown but AL East division game suggests strength
- F5 ML shows 20% edge for BOS home (56.1% prob) — early-inning strength is key signal
Risk Factors
- Both pitchers are aces (B grade); Sale's 10.4 K/9 and B stuff grade vs Tolle's 9.7 K/9 is marginal mismatch
- Market at +114 (46.7% implied) may have already priced in Boston's home field; 7.1% edge is modest, not extreme
- ATL has deeper lineup than BOS (multiple IL guys in Boston)—could favor visitor
HOME UNDERDOG ZONEPITCHER QUALITY MATCHEDZONE PROFILE POSITIVEF5 SUPPORT
Edge Analysis
Moneyline
BOS 55.9%
-28.3 pts
Run Line
+1.5
-28.3 pts
Total
6.5
+16.5 pts
How this prediction was generated: This page shows output from the Olympus Bets MLB Baseball Monte Carlo engine. Each game is simulated 10,000 times using real-time team data, injury reports, and current odds. Probabilities are calibrated using Bayesian methods and sized via the Kelly Criterion. Full methodology →