Seattle Mariners vs Pittsburgh Pirates

June 24, 2026 — MLB Prediction & Betting Pick

Our model leans Seattle Mariners

On balance, more tracked inputs leaned Pittsburgh Pirates (13 edges vs 8 for Seattle Mariners).

Note: the model leans Seattle Mariners even though the simple edge count favors Pittsburgh Pirates. 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 Seattle Mariners

Looking at recent performance trends over the last ten games — including win rate, run differential, and offensive momentum — the matchup favors the Seattle Mariners.

Pittsburgh Pirates 0.400 vs Seattle Mariners 0.500 — leans Seattle Mariners
Pittsburgh Pirates -0.60 vs Seattle Mariners -0.60 — roughly even
Pittsburgh Pirates 5.05 vs Seattle Mariners 3.70 — leans Pittsburgh Pirates
Pittsburgh Pirates 5.65 vs Seattle Mariners 4.30 — leans Seattle Mariners
Pittsburgh Pirates 0.333 vs Seattle Mariners 0.667 — leans Seattle Mariners
Pittsburgh Pirates 0.726 vs Seattle Mariners 0.631 — roughly even

Season to date — Mixed

Season-to-date metrics are closely matched between Seattle Mariners and Pittsburgh Pirates.

Pittsburgh Pirates 4.97 vs Seattle Mariners 4.11 — leans Pittsburgh Pirates
Pittsburgh Pirates 4.81 vs Seattle Mariners 3.89 — leans Seattle Mariners
Pittsburgh Pirates 0.375 vs Seattle Mariners 0.455 — leans Seattle Mariners
Pittsburgh Pirates 101.3 vs Seattle Mariners 96.6 — leans Pittsburgh Pirates

Starting pitching (recent starts) — leans Pittsburgh Pirates

Evaluating the probable starters based on recent ERA, WHIP, strikeout rate, and pitching form trends, the matchup favors the Pittsburgh Pirates.

Pittsburgh Pirates 3.34 vs Seattle Mariners 6.11 — leans Pittsburgh Pirates
Pittsburgh Pirates 1.11 vs Seattle Mariners 1.32 — leans Pittsburgh Pirates
Pittsburgh Pirates 10.31 vs Seattle Mariners 4.50 — leans Pittsburgh Pirates
Pittsburgh Pirates -1.63 vs Seattle Mariners -6.54 — leans Seattle Mariners
Pittsburgh Pirates 5.81 vs Seattle Mariners 6 — roughly even
Pittsburgh Pirates 1.52 vs Seattle Mariners 1.67 — leans Pittsburgh Pirates
Pittsburgh Pirates 4.77 vs Seattle Mariners 5.27 — leans Pittsburgh Pirates
Pittsburgh Pirates 0 vs Seattle Mariners 0 — roughly even

Offense & matchup — leans Pittsburgh Pirates

Analyzing recent offensive output (OBP, SLG) and platoon matchup data against the opposing starter's throwing arm, the matchup favors the Pittsburgh Pirates.

Pittsburgh Pirates 0.405 vs Seattle Mariners 0.387 — leans Pittsburgh Pirates
Pittsburgh Pirates 0.476 vs Seattle Mariners 0.488 — roughly even
Pittsburgh Pirates 0.469 vs Seattle Mariners 0.383 — leans Pittsburgh Pirates
Pittsburgh Pirates 0.558 vs Seattle Mariners 0.504 — leans Pittsburgh Pirates
Pittsburgh Pirates 0.439 vs Seattle Mariners 0.385 — leans Pittsburgh Pirates
Pittsburgh Pirates 0.534 vs Seattle Mariners 0.517 — roughly even
Pittsburgh Pirates 0.951 vs Seattle Mariners 0.922 — roughly even
Pittsburgh Pirates 0.034 vs Seattle Mariners -0.002 — leans Pittsburgh Pirates

Series & head-to-head — leans Seattle Mariners

Prior head-to-head meetings this season's training window — win rate and run differential between these clubs — the matchup favors the Seattle Mariners.

Pittsburgh Pirates 0 vs Seattle Mariners 1 — leans Seattle Mariners
Pittsburgh Pirates -1 vs Seattle Mariners 1 — leans Seattle Mariners

Betting Lines

Seattle Mariners +1.5 | O/U 7.5 (FanDuel)

Final Score

Seattle Mariners 1, Pittsburgh Pirates 11 — Pittsburgh Pirates 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. Please gamble responsibly.