Baltimore Orioles vs Seattle Mariners Prediction 6/17/2026 Today’s MLB Picks

The Baltimore Orioles and the Seattle Mariners will meet on Wednesday night in the second game of a three‑game American League series at T‑Mobile Park in Seattle, Washington.

Baltimore Orioles Betting Preview

The Baltimore Orioles enter Wednesday’s contest with a 34–40 overall record (4th in the American League East) and a 12–21 mark on the road. The Orioles offense has been competitive to this point in the 2026 regular season. Through 74 games played in 2026, Baltimore has compiled 344 runs scored (8th in MLB), 120 doubles, a .241 team batting average and 86 home runs which ranks 13th in Major League Baseball.

The Baltimore Orioles arrive at today’s game in below average form. Baltimore has lost three of the team’s last four games played this season, including a 9–3 loss to the San Diego Padres four days ago.

Baltimore will turn to right hander Kyle Bradish in this contest. In fourteen starts made this season, Bradish has compiled a 3–7 win‑loss record, a 4.30 ERA, a 1.57 WHIP and 73 strikeouts, while allowing 76 hits and 39 walks in 73.1 innings pitched.

The Baltimore Orioles offense features first baseman Pete Alonso and outfielder Taylor Ward. Pete Alonso leads the team with 16 home runs, 13 doubles, 35 walks, 48 RBIs (11th in MLB) and an .807 OPS. Taylor Ward enters this contest with a .257 batting average, 3 home runs, 17 doubles, 63 walks, 20 RBIs and an .756 OPS.

Seattle Mariners Betting Preview

The Seattle Mariners enter Wednesday night’s matchup with a 38–36 overall record (1st in the American League West) and a 20–16 mark at home. Seattle has played subpar baseball recently, losing four of the team’s last six games played this season, including an 8–3 loss to the Washington Nationals last week.

Seattle will start right hander George Kirby in tomorrow’s game. In fourteen starts made this season, Kirby has compiled a 5–6 record, a 4.07 ERA, a 1.31 WHIP and 74 strikeouts, while allowing 89 hits and 21 walks in 84 innings pitched.

Turning our attention to the Seattle offense, the Mariners lineup features outfielder Randy Arozarena first baseman Josh Naylor. Arozarena has amassed a .291 batting average, 7 home runs, 33 RBIs and an .826 OPS. Naylor has compiled a .253 batting average, 8 home runs, 23 walks, 32 RBIs and a .687 OPS.         

Why the Baltimore Orioles will win.

• Starting pitching. Kyle Bradish has compiled a 4.30 ERA and 73 strikeouts in 73.1 innings this season.

• Offensive upside. Pete Alonso and Taylor Ward continue to anchor the Baltimore Orioles lineup.

• Motivation. The Baltimore Orioles arrive at this contest on the heels of a three-game losing streak.

Why the Seattle Mariners will win.

• Home field advantage. The Mariners have played competitive baseball at T‑Mobile Park this season posting a 20-16 record.

• Quality starting pitching. In fourteen starts made this season, George Kirby has compiled a 5–6 record, a 4.07 ERA, a 1.31 WHIP and 74 strikeouts, while allowing 89 hits and 21 walks in 84 innings pitched.

• Offensive production. Randy Arozarena and Josh Naylor provide a strong core to the Seattle lineup.

Baltimore Orioles vs. Seattle Mariners Prediction

In my view, this matchup favors the Seattle Mariners. Seattle starting pitcher George Kirby has pitched at a high level this season compiling a 4.07 ERA and a 1.31 WHIP in 84 innings pitched. It is noteworthy that Kirby faced the Orioles in his last outing, scattering 7 hits and 3 walks, while striking out 10 Baltimore batters. Additionally, the Seattle Mariners have played well at home posting a 20-16 win-loss record. With that said, the Mariners are the clear side to be on in this one. I am backing the Seattle Mariners on the moneyline in this game.

Hans Geevers's Pick: Seattle Mariners ML