← All picks for August 21, 2025
St. Louis Cardinals vs Tampa Bay Rays
August 21, 2025 — MLB Prediction & Betting Pick
Our model leans Tampa Bay Rays
On balance, more tracked inputs leaned St. Louis Cardinals (16 edges vs 5 for Tampa Bay Rays).
Note: the model leans Tampa Bay Rays 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.
- Tampa Bay Rays 0.350 vs St. Louis Cardinals 0.400 — leans St. Louis Cardinals
- Tampa Bay Rays -1.45 vs St. Louis Cardinals -1.20 — leans St. Louis Cardinals
- Tampa Bay Rays 3.55 vs St. Louis Cardinals 3.75 — leans St. Louis Cardinals
- Tampa Bay Rays 5 vs St. Louis Cardinals 4.95 — roughly even
- Tampa Bay Rays 0 vs St. Louis Cardinals 0.667 — leans St. Louis Cardinals
- Tampa Bay Rays 0.751 vs St. Louis Cardinals 1.511 — leans St. Louis Cardinals
Season to date — Mixed
Season-to-date metrics are closely matched between St. Louis Cardinals and Tampa Bay Rays.
- Tampa Bay Rays 4.43 vs St. Louis Cardinals 4.16 — leans Tampa Bay Rays
- Tampa Bay Rays 4.22 vs St. Louis Cardinals 4.36 — roughly even
- Tampa Bay Rays 0.200 vs St. Louis Cardinals 0.556 — leans St. Louis Cardinals
- Tampa Bay Rays 96.8 vs St. Louis Cardinals 97.2 — roughly even
Starting pitching (recent starts) — leans St. Louis Cardinals
Evaluating the probable starters based on recent ERA, WHIP, strikeout rate, and pitching form trends, the matchup favors the St. Louis Cardinals.
- Tampa Bay Rays 8.10 vs St. Louis Cardinals 5.28 — leans St. Louis Cardinals
- Tampa Bay Rays 1.68 vs St. Louis Cardinals 1.34 — leans St. Louis Cardinals
- Tampa Bay Rays 9.18 vs St. Louis Cardinals 9.93 — leans St. Louis Cardinals
- Tampa Bay Rays -3.31 vs St. Louis Cardinals 7.69 — leans Tampa Bay Rays
- Tampa Bay Rays 5.47 vs St. Louis Cardinals 3.74 — leans St. Louis Cardinals
- Tampa Bay Rays 1.22 vs St. Louis Cardinals 1.48 — leans Tampa Bay Rays
- Tampa Bay Rays 5.07 vs St. Louis Cardinals 3.88 — leans St. Louis Cardinals
- Tampa Bay Rays 23.3 vs St. Louis Cardinals 21.7 — leans St. Louis Cardinals
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.
- Tampa Bay Rays 0.313 vs St. Louis Cardinals 0.353 — leans St. Louis Cardinals
- Tampa Bay Rays 0.432 vs St. Louis Cardinals 0.404 — leans Tampa Bay Rays
- Tampa Bay Rays 0.327 vs St. Louis Cardinals 0.362 — leans St. Louis Cardinals
- Tampa Bay Rays 0.383 vs St. Louis Cardinals 0.382 — roughly even
- Tampa Bay Rays 0.341 vs St. Louis Cardinals 0.383 — leans St. Louis Cardinals
- Tampa Bay Rays 0.428 vs St. Louis Cardinals 0.476 — leans St. Louis Cardinals
- Tampa Bay Rays 0.933 vs St. Louis Cardinals 0.394 — leans Tampa Bay Rays
- Tampa Bay Rays 0.028 vs St. Louis Cardinals 0.030 — roughly even
Series & head-to-head — Mixed
Head-to-head history between St. Louis Cardinals and Tampa Bay Rays does not clearly favor either side.
- Tampa Bay Rays 0.500 vs St. Louis Cardinals 0.500 — roughly even
- Tampa Bay Rays 0 vs St. Louis Cardinals 0 — roughly even
Betting Lines
St. Louis Cardinals +1.5 | O/U 8.5 (BetOnline.ag)
Final Score
St. Louis Cardinals 7, Tampa Bay Rays 4 — St. Louis Cardinals win — Model pick was incorrect
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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