The Pittsburgh Pirates host the Seattle Mariners on June 23, 2026. First pitch from PNC Park is scheduled for 6:40 p.m. EDT. The game will be broadcast on SEAM.
The Mariners are favored by -131 on the moneyline and by -1.5 on the run line. The Pirates are +110 on the moneyline and +1.5 on the run line. The total is set at 8.5 runs.
Find my MLB picks and Mariners vs Pirates prediction below, as well as probable pitchers, weather report, and more.
Mariners vs Pirates Prediction
- Mariners vs Pirates Pick: Over 8.5
My Mariners vs Pirates best bet is on game totals. Make sure to find the best odds by checking our live MLB odds page.
Mariners vs Pirates Odds
| Mariners Odds | ||
|---|---|---|
| Spread | Total | Moneyline |
-1.5 -160 | 8.5 -115o / -105u | -131 |
| Pirates Odds | ||
|---|---|---|
| Spread | Total | Moneyline |
+1.5 +135 | 8.5 -115o / -105u | +110 |
- Mariners vs Pirates moneyline: Mariners -131, Pirates +110
- Mariners vs Pirates over/under: 8.5 (-115o / -105u)
- Mariners vs Pirates spread: Mariners -1.5 (+135), Pirates +1.5 (-160)
Mariners vs Pirates Probable Pitchers
| RHP George Kirby (SEA) | Stat | RHP Mitch Keller (PIT) |
|---|---|---|
| 5-7 | W-L | 5-4 |
| 1.7 | fWAR (FanGraphs) | 1.2 |
| 4.10 / 3.63 | ERA / xERA | 4.92 / 4.99 |
| 3.41 / 3.59 | FIP / xFIP | 3.97 / 4.34 |
| 15.5% | K-BB% | 9.6% |
| 50.4% | GB% | 40.6% |
| .333 | BABIP | .291 |
| 101 | Stuff+ | 93 |
| 112 | Location+ | 102 |
Mariners vs Pirates MLB Betting Preview
The Mariners enter this matchup with a 40-39 record and are 18-20 on the road. Seattle has hovered around the .500 mark for much of the season and will look for a strong outing from George Kirby to gain some momentum.
Kirby has shown plenty of strikeout ability lately, recording 20 strikeouts against just four walks over his last three appearances. However, opponents have also found success against him, collecting 24 hits and contributing to a 5.63 ERA during that stretch.
The Pirates are also sitting at 39-39 and have been solid at home with a 20-19 record. Mitch Keller gets the ball for Pittsburgh and is coming off a start in which he matched a season high with seven strikeouts against the Athletics.
Like Kirby, Keller has been searching for consistency. He owns a 7.71 ERA over his last three outings, though his strikeout numbers remain encouraging.
Mariners vs Pirates Pick, Betting Analysis
Our Twilight Spots Over Bet Lab System isolates a unique market edge in late afternoon and early evening games. This transitional lighting and temperature window subtly create elevated scoring conditions.
When these environmental factors combine with home starters possessing below-average WHIPs and two teams trending toward high-scoring games, the total is often underpriced due to a time-of-day bias.
Today’s Mariners-Pirates matchup perfectly triggers this system. Both starting pitchers have been hunting for consistency amid recent struggles. Though both pitchers carry impressive strikeout upside, their recent vulnerabilities against contact align ideally with this transitional environment.
Capitalize on the underpriced line and back the Over in Pittsburgh.
Pick: Over 8.5
