Mariners vs White Sox Prediction 5/9/26 MLB Picks Today

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.

Chicago White Sox Preview

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.

Seattle Mariners Preview

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.

Seattle Mariners @ the Chicago White Sox Betting Trends: May 9, 2026

• Probable Starting Pitcher: Anthony Kay      Record this season: 1-1      ERA: 5.70
• Home Record: 0-0
• Last 5 against Mariners: 0-0

Why the Chicago White Sox will win

• The White Sox have won each of their last five games as underdogs against AL West opponents following a home loss.
• The Mariners have lost five of their last six games as favorites against American League opponents following a road win.
• The underdogs have covered the run line in 13 of the White Sox’s last 14 games.
• The Mariners have failed to cover the run line in nine of their last 10 night games following a win.
• The White Sox have led after 3 innings in seven of their last eight games as underdogs against American League opponents.
• The Mariners have trailed after 5 innings in seven of their last eight games as road favorites against American League opponents.

• Probable Starting Pitcher: Luis Castillo      Record this season: 0-3      ERA: 6.29
• Road Record: 0-2
• Last 5 against White Sox: 2-0

Why the Seattle Mariners will win

• The Mariners have won nine of their last 10 games against the White Sox.
• The White Sox have lost eight of their last nine games against the Mariners following a loss.
• The White Sox have failed to cover the run line in each of their last seven home games following a loss.
• The road team has covered the run line in eight of the Mariners’ last nine games.
• The Mariners have led after 5 innings in each of their last four games against the White Sox.

Total Runs Facts

• Each of the White Sox’s last four night games after playing the previous day have gone UNDER the total runs line.
• Five of the Mariners’ last six road games against AL Central opponents have gone OVER the total runs line.
• The ‘Inning 1 OVER 0.5 runs’ market has hit in seven of the White Sox’s last eight night games against AL West opponents.
• The ‘Inning 1 UNDER 0.5 runs’ market has hit in six of the Mariners’ last seven road games against AL Central opponents.

Chicago White Sox Player Prop Facts

• Miguel Vargas has recorded at least one hit in each of the White Sox’s last 11 games as underdogs.
• Austin Hays has hit a home run in two of his last three appearances against the Mariners.
• Munetaka Murakami ranks T1st in the league in Home Runs (15) this season.

Seattle Mariners Player Prop Facts

• Julio Rodriguez has hit a home run in three of the Mariners’ last four road games against the White Sox.
• Luis Castillo has recorded six or more strikeouts in three of his four previous appearances against the White Sox.
• Julio Rodriguez has recorded at least one hit in each of the Mariners’ last 12 Saturday games.
• Randy Arozarena ranks T9th in the league in Steals (9) this season.

Matchup/League Facts

• The White Sox rank 30th in the league for doubles this season (41).
• The White Sox rank 27th in the league for hits this season (290).
• The Mariners rank 1st in the league for walks allowed this season (96).
• The Mariners rank T27th in the league for doubles this season (51).

Mariners vs White Sox Prediction

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.