Seattle Mariners (19-20) vs. Chicago White Sox (17-21) May 9, 2026 7:10 pm EDT The Line: Chicago White Sox 119 / Seattle Mariners -143; Over/Under: 9 (Get latest betting odds)
In this article, we will formulate a Mariners vs White Sox Prediction for this MLB matchup on Saturday, May 9 th in the second game of this series. Let’s take a look at the prediction for this MLB matchup.
The Chicago White Sox have a 17-21 record this season and are sitting in the fourth place of the AL Central. They have a 7-9 home record and are coming off an 8-12 loss at home against the Mariners. They will face the Royals and the Cubs next.
The White Sox have a .230 batting average this season, .323 OBP and .384 Slugging percentage. Chicago’s pitching staff has a 4.44 ERA and 1.38 WHIP. Chase Meidroth is the team’s best hitter with a .277 batting average. Munetaka Murakami leads the team in RBI with 29, also adding a team‑high 15 home runs.
Anthony Kay (L) is the projected starting pitcher for the White Sox, and he has a 1-1 record, 5.70 ERA and 1.67 WHIP.
The Seattle Mariners have a 19-20 record this season and are sitting in the second place of the AL West. They have a 7-9 away record and are coming off a 12-8 win on the road against the White Sox. They will face the Astros and the Padres next.
The Mariners have a .232 batting average this season, .322 OBP and .385 Slugging percentage. Seattle’s pitching staff has a 3.75 ERA and 1.23 WHIP. Randy Arozarena is the team’s best hitter with a .279 batting average. Luke Raley leads the team in RBI with 23, also adding a team‑high 8 home runs.
Luis Castillo (R) is the projected starting pitcher for the Mariners, and he has a 0-3 record, 6.29 ERA and 1.66 WHIP.
The Mariners are 9-1 in their last 10 meetings against the White Sox and are 6-1 in their last 7 visits in Chicago.
In this Mariners vs White Sox Prediction, the Mariners are coming as -140 road favorites. The Mariners won yesterday in an extremely high-scoring game that had 20 total runs and both starting pitchers in this matchup have been terrible so far, with a combined 11.99 ERA. Chicago’s bullpen ranks just 24 th in the league and given both pitchers’ recent form, I expect a high-scoring affair today, so take the over 9 in this one.