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Seattle Mariners vs Pittsburgh Pirates Starting Lineup — Tuesday, Jun 23, 2026

Tuesday, Jun 23, 2026PNC ParkFinalStarting Lineups
SEA · Away

Seattle Mariners

SP: George Kirby · ERA 3.68
3-2
Final
PIT · Home

Pittsburgh Pirates

SP: Mitch Keller · ERA 5.29
Final Lineup2026 season stats · career vs opposing starter
Full matchup preview

Final Lineups

Seattle Mariners @ Pittsburgh Pirates · Tuesday, Jun 23, 2026

Seattle Mariners
Seattle Mariners
SP: Mitch Keller · ERA 5.29
#BatterAVGOBPOPSHRRBIvAVGvOPS
1Cal Raleigh0.1610.2670.57012430.1710.631
2Cole Young0.2650.3240.73414520.2680.733
3Colt Emerson0.1960.2530.5998230.2610.862
4Dominic Canzone0.2510.3260.81518490.2880.929
5J.P. Crawford0.2120.3300.67510300.2240.775
2026 season: AVG · OBP · OPS · HR · RBIvAVG / vOPS = career vs this SP
Pittsburgh Pirates
Pittsburgh Pirates
SP: George Kirby · ERA 3.68
#BatterAVGOBPOPSHRRBIvAVGvOPS
1Billy Cook0.2000.2000.467020.2000.400
2Brandon Lowe0.2530.3190.80425740.2690.927
3Bryan Reynolds0.2680.3790.82215630.2680.829
4Endy Rodríguez0.2670.3730.8407200.2860.908
5Esmerlyn Valdez0.2420.3710.94214380.0630.368
2026 season: AVG · OBP · OPS · HR · RBIvAVG / vOPS = career vs this SP
◆ Matchup preview

Seattle Mariners at Pittsburgh Pirates (2026-06-23). George Kirby vs Mitch Keller at PNC Park.

George Kirby enters this matchup with a season ERA of 4.1 and a WHIP of 1.31 over 90 innings pitched across 15 starts, demonstrating a consistent ability to limit home runs with a 0.9 HR/9 rate. His K/9 stands at 7.9 and BB/9 at 2.1, indicating solid command. Kirby's recent performance shows a downward trend in ERA and a strong 66.7% quality start percentage, suggesting improved form. Mitch Keller, for the Pirates, has a season ERA of 4.92 and a WHIP of 1.32 over 82.1 innings in 15 starts. His K/9 is 7.11 and BB/9 is 3.39, indicating slightly less strikeout efficiency and more walks compared to Kirby. Keller also shows a downward trend in ERA and a 66.7% quality start percentage, aligning with Kirby in recent effectiveness.

The Seattle Mariners' offense has posted a .700 OPS with 326 runs scored, driven by 98 home runs, while maintaining a .232 batting average. Their pitching staff has been more effective, holding a 3.62 team ERA and a 1.18 WHIP, with a strong 8.86 K/9. The Pittsburgh Pirates' offense has been more productive, with a .744 OPS and 391 runs scored, hitting 94 home runs, alongside a .255 batting average. Pittsburgh's pitching unit has a 4.17 team ERA and a 1.31 WHIP, with a 9.16 K/9, suggesting a higher propensity for runs allowed compared to Seattle.

Recent head-to-head contests between these two teams in 2025 saw the Mariners sweep the Pirates, with scores of 1-0, 1-0, and 6-0, indicating low-scoring affairs. The current total line of 8.5 runs for this game appears to be a notable adjustment from those historical low-scoring matchups, potentially reflecting the current offensive capabilities and pitching trends of both teams, particularly the Pirates' higher run production this season.

Key facts
Mariners Team ERA 3.62Pirates Team OPS 0.744Kirby Quality Start Pct 66.7%Total 8.5