The Seattle Mariners host the Pittsburgh Pirates on July 6, 2025. First pitch from T-Mobile Park is scheduled for 4:10 p.m. EDT; the game will be broadcast on ROOT Sports NW.
Find my MLB betting preview and Pirates vs Mariners prediction below, as well as probable pitchers, betting trends, injury reports, and more.
My Pirates vs Mariners Prediction
- Pirates vs Mariners pick: Under 6.5
My Pirates vs Mariners best bet is Under 6.5. Make sure to find the best odds by checking our live MLB odds page.
Pirates vs Mariners Odds
| Pirates Odds | ||
|---|---|---|
| Spread | Total | Moneyline |
-1.5 +165 | 6.5 -110o / -110u | -110 |
| Mariners Odds | ||
|---|---|---|
| Spread | Total | Moneyline |
+1.5 -200 | 6.5 -110o / -110u | -110 |
Pirates vs Mariners Projected Starting Pitchers
| Paul Skenes (PIT) | Stat | George Kirby (SEA) |
|---|---|---|
| 4-7 | W-L | 2-4 |
| 3.6 | fWAR (FanGraphs) | 0.4 |
| 2.03/2.53 | ERA /xERA | 4.85/3.70 |
| 2.50/3.16 | FIP / xFIP | 4.07/3.50 |
| 0.92 | WHIP | 1.17 |
| 19.8 | K-BB% | 18.3 |
| 47.3 | GB% | 43.1 |
| 108 | Stuff+ | 97 |
| 111 | Location+ | 114 |
Pirates vs Mariners Prediction, Betting Analysis
This MLB betting system focuses on regular-season unders in Game 3 or 4 of a series, where the home team starts a pitcher with low strikeout rates and a moderate WHIP—indicators of softer contact and limited dominance. At this stage in the series between the Pirates and Mariners, hitters have faced multiple arms, and scouting adjustments are in play, but scoring often stays low when overpowering velocity is absent and weather conditions remain neutral.
The system filters explicitly out games with strong directional winds to avoid inflated totals driven by wind-aided offense. These matchups often involve home teams in the midseason grind, performing respectably but not drawing market attention.
As a result, the public may overlook how often these quiet, late-series setups lead to slower tempo and suppressed scoring. This strategy consistently finds value in under-the-radar games, where subtle pitching and situational edges favor the under.
Pick: Under 6.5
Moneyline
There is no play on the moneyline.
Run Line (Spread)
There is no play on the run line.
Over/Under
Take the under in today's Pirates vs. Mariners series finale.
