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Pittsburgh Pirates vs St. Louis Cardinals
May 20, 2026 — MLB Prediction & Betting Pick
Our model leans Pittsburgh Pirates
On balance, more tracked inputs leaned St. Louis Cardinals (11 edges vs 4 for Pittsburgh Pirates).
Note: the model leans Pittsburgh Pirates even though the simple edge count favors St. Louis Cardinals. This can happen because the model weighs each input differently — a single large advantage (like a dominant pitching matchup or a significant offensive gap) can outweigh several smaller edges on the other side. The edge count treats every metric equally, but the model does not.
Matchup Breakdown
Recent form (last ~10 games) — leans St. Louis Cardinals
Looking at recent performance trends over the last ten games — including win rate, run differential, and offensive momentum — the matchup favors the St. Louis Cardinals.
- St. Louis Cardinals 0.600 vs Pittsburgh Pirates 0.300 — leans St. Louis Cardinals
- St. Louis Cardinals 0.60 vs Pittsburgh Pirates -1 — leans St. Louis Cardinals
- St. Louis Cardinals 4.10 vs Pittsburgh Pirates 5 — leans Pittsburgh Pirates
- St. Louis Cardinals 3.50 vs Pittsburgh Pirates 6 — leans St. Louis Cardinals
- St. Louis Cardinals 0.667 vs Pittsburgh Pirates 0 — leans St. Louis Cardinals
- St. Louis Cardinals 1.057 vs Pittsburgh Pirates 0.400 — leans St. Louis Cardinals
Season to date — leans St. Louis Cardinals
Season-long stats including runs scored and allowed per game, home/road splits, and weighted offensive production (wRC+) the matchup favors the St. Louis Cardinals.
- St. Louis Cardinals 4.52 vs Pittsburgh Pirates 4.90 — leans Pittsburgh Pirates
- St. Louis Cardinals 4.40 vs Pittsburgh Pirates 4.58 — leans St. Louis Cardinals
- St. Louis Cardinals 0.750 vs Pittsburgh Pirates 0.250 — leans St. Louis Cardinals
- St. Louis Cardinals 99.3 vs Pittsburgh Pirates 100.5 — roughly even
Starting pitching (recent starts) — Mixed
The starting pitching matchup between Pittsburgh Pirates and St. Louis Cardinals grades out as a toss-up based on recent outings.
- St. Louis Cardinals 3.05 vs Pittsburgh Pirates 3.86 — leans St. Louis Cardinals
- St. Louis Cardinals 1.05 vs Pittsburgh Pirates 1.38 — leans St. Louis Cardinals
- St. Louis Cardinals 5.62 vs Pittsburgh Pirates 10.29 — leans Pittsburgh Pirates
- St. Louis Cardinals 1.11 vs Pittsburgh Pirates -2.92 — leans Pittsburgh Pirates
Offense & matchup — leans St. Louis Cardinals
Analyzing recent offensive output (OBP, SLG) and platoon matchup data against the opposing starter's throwing arm, the matchup favors the St. Louis Cardinals.
- St. Louis Cardinals 0.341 vs Pittsburgh Pirates 0.342 — roughly even
- St. Louis Cardinals 0.477 vs Pittsburgh Pirates 0.397 — leans St. Louis Cardinals
- St. Louis Cardinals 0.364 vs Pittsburgh Pirates 0.367 — roughly even
- St. Louis Cardinals 0.519 vs Pittsburgh Pirates 0.436 — leans St. Louis Cardinals
Betting Lines
Pittsburgh Pirates +1.5 | O/U 7.5 (FanDuel)
Final Score
Pittsburgh Pirates 7, St. Louis Cardinals 0 — Pittsburgh Pirates win — Model pick was correct
This analysis is generated by a machine-learning model and is intended for
informational and entertainment purposes only. It does not constitute financial
or betting advice. Past model performance does not guarantee future results.
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