Seattle Mariners vs Pittsburgh Pirates Picks and Prediction for Tuesday June 23 2026

The Seattle Mariners and Pittsburgh Pirates meet on Tuesday, June 23, 2026, at PNC Park in Pittsburgh, Pennsylvania. First pitch is scheduled for 6:40 PM, and the game will be televised on MLB.TV. At the time of this writing the odds were not released. Seattle enters the matchup with a 40-39 record, while Pittsburgh comes in at 39-39. ESPN's Matchup Predictor gives the Pirates a slight edge at 54.2 percent compared to 45.8 percent for the Mariners. Be sure to check out our free MLB picks.

Starting Pitchers Ready for the Spotlight

Seattle is expected to start George Kirby in this matchup. The right-hander enters with a 5-7 record, a 4.10 ERA, and a 1.31 WHIP across 90.0 innings. He has allowed 97 hits while striking out 79 batters and walking 21. Pittsburgh is expected to counter with Mitch Keller. The right-hander owns a 5-4 record with a 5.25 ERA and a 1.34 WHIP in 82.1 innings. He has surrendered 79 hits, recorded 65 strikeouts, issued 31 walks, and allowed seven home runs.

Seattle Seeking Consistency Away From Home

The Mariners enter this contest with a 40-39 overall record and an 18-20 mark on the road. Seattle has gone 2-3 over its last five games. The club recently defeated Boston and also earned a victory against Baltimore. However, the Mariners dropped two games against Boston and another contest against Baltimore during that stretch.

Seattle has posted a .232 batting average with 326 runs scored, 606 hits, and 98 home runs. The Mariners own a .313 on-base percentage and a .387 slugging percentage. On the pitching side, Seattle carries a 3.62 ERA and a 1.18 WHIP while limiting opponents to a .239 batting average. The pitching staff has recorded 692 strikeouts and issued 202 walks.

One of Seattle's biggest strengths is its pitching staff. The Mariners own the lower ERA and WHIP in this matchup while also holding opponents to a lower batting average than their season batting average. Their staff has also recorded 692 strikeouts, providing another indication of their ability to control games from the mound.

Pittsburgh Bringing Offensive Momentum Home

The Pirates enter Tuesday's matchup with a 39-39 overall record and a 20-19 record at home. Pittsburgh has won three of its last five games and is coming off an 8-6 victory over Colorado. The Pirates also recently defeated Colorado and earned a win against Athletics during this stretch. Their two losses came in close games against Colorado.

Pittsburgh has been productive offensively this season, posting a .255 batting average with 391 runs scored, 688 hits, and 94 home runs. The Pirates own a .335 on-base percentage and a .409 slugging percentage. Their pitching staff has produced a 4.21 ERA and a 1.31 WHIP while allowing opponents to hit .236. Pittsburgh pitchers have accumulated 711 strikeouts and 287 walks.

The biggest strength for Pittsburgh is its offense. The Pirates hold advantages over Seattle in batting average, runs scored, hits, on-base percentage, and slugging percentage. Those numbers have helped the club remain competitive throughout the season and are a major reason the matchup predictor gives them a slight edge at home.

Seattle Mariners vs Pittsburgh Pirates Picks and Prediction

Seattle Mariners vs Pittsburgh Pirates Pick

• Pick: Seattle Mariners Moneyline

Although Pittsburgh owns the slight edge in the matchup predictor and has been productive offensively, Seattle brings the stronger pitching profile into this game. The Mariners have the lower ERA, lower WHIP, and fewer walks allowed while also featuring the starter with the lower ERA. In what projects to be a closely contested matchup between two teams hovering around .500, Seattle's pitching advantage gives the visitors the edge.

Seattle Mariners vs Pittsburgh Pirates Total Pick

• Pick: Take the over if the total is set at 8.5

I would lean toward the over because Pittsburgh has been one of the stronger offensive teams in this matchup, scoring 391 runs and collecting 688 hits. Seattle has also hit 98 home runs this season. While the Mariners possess solid pitching numbers, the offensive production shown by both clubs suggests enough opportunities for scoring to push the game beyond a typical total.

Final Score Prediction: Seattle Mariners 5 – Pittsburgh Pirates 4

This prediction was written before the completion of game play on Monday.