MIA vs SD prediction for September 20, 2026: Our Monte Carlo simulation ran 10,000 game iterations and projects SD 3.8 - MIA 3.8. SD is favored with a 51.6% win probability. The run line is -1.5 and the total is 8.0. Model projects 7.6 total runs.
SD
3.8
Projected Score
VS
O/U 8.0
MIA
3.8
Projected Score
Win Probability
SDMIA
-1.5
Run Line (SD)
8.0
Total Line
10,000
Simulations
Calibrated accuracy at this confidence: 53.5% (4,016 games)
Projected Runs Range 10th – 90th percentile
MIA
246
SD
246
Projected
SD 3.8 — MIA 3.8
Actual
SD 7 — MIA 3
Starting Pitcher Matchup
Sandy Alcantara R
MIA
usagewhiffbar labels show usage · mph
SI26%97 mph9% whiff
CH21%91 mph26% whiff
FF18%98 mph17% whiff
Walker Buehler R
SD
usagewhiffbar labels show usage · mph
FC24%90 mph16% whiff
FF20%94 mph12% whiff
SI19%94 mph10% whiff
Weather Impact
PETCO Park
75°F8 mph wind
HR: 1.044 Total: 1.024
neutral
Bullpen Comparison
MIA
4.31ERA
3.97FIP
9.84K/9
4.30BB/9
1.31WHIP
SD
2.89ERA
3.50FIP
9.93K/9
3.80BB/9
1.21WHIP
Betting Edges
First 5 Innings & NRFI
MIA F5
2.3 runs
44.0% win
SD F5
2.1 runs
39.2% win
F5 Total
4.4
NRFI
55.2%
YRFI
44.8%
Avg 1st Inn Runs
0.94
HR Spotlight
Injury Report
MIA8 injured
Xavier Edwards 2BDAY-TO-DAY
Anthony Bender RP15-DAY-IL
Pete Fairbanks RP15-DAY-IL
Max Meyer SP15-DAY-IL
Owen Caissie RF10-DAY-IL
Andrew Nardi RP60-DAY-IL
+2 more
SD8 injured
Gavin Sheets 1B10-DAY-IL
Jeremiah Estrada RP15-DAY-IL
Ramon Laureano LF60-DAY-IL
Jason Adam RP60-DAY-IL
Miguel Andujar DH10-DAY-IL
Joe Musgrove SP60-DAY-IL
+2 more
AI Intelligence Analysis
Edge Analysis
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. Probabilities are calibrated using Bayesian methods and sized via the Kelly Criterion. Full methodology →
Permanent record: this game page is retired 90 days after the event. The full graded MLB 2026 record — every pick, win rate, units and ROI — lives on the MLB 2026 season report card.