- Matchup: Seattle Mariners vs Chicago White Sox
- Date: Saturday, May 9, 2026
- Venue: Rate Field, Chicago, IL
- Broadcast: Chicago Sports Network
- Betting Odds: Seattle (-145) | Chicago (+125)
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The Seattle Mariners (18-20) travel to Rate Field this Saturday to face off against the Chicago White Sox (17-20). Seattle’s moneyline is set at -145, while Chicago comes in at +125. The over/under for the game is positioned at 8.5 runs, with Luis Castillo and Anthony Kay as the starting pitchers.
This season, the Mariners have a slugging percentage of .377, with 351 strikeouts and 148 walks. They have hit 148 RBIs and recorded 286 base hits, resulting in an average batting score of .229. Additionally, the Mariners have 51 doubles and 42 home runs, totaling 153 runs scored and an on-base percentage of .319. As a squad, Seattle is averaging 4.0 runs per game, ranking 25th in the league.
Seattle’s pitching staff boasts a team ERA of 3.63, ranking 6th in the league, and they have struck out 318 batters. They have allowed 37 home runs and surrendered 149 runs overall (7th in MLB). The Mariners have issued 93 walks and have a team FIP of 3.70 this season. Overall, they have allowed 324 hits, averaging 8.6 per 9 innings, with 137 earned runs. Their strikeout-to-walk ratio is 3.42, complemented by a WHIP of 1.23.
This season, the Mariners have utilized 119 relief pitchers. Bullpen players have inherited 41 runners, with only 12.2% reaching home plate. Their bullpen has registered 20 holds (20th in the league) and has entered games with base runners 31 times, competing in 49 high-leverage situations. They have secured 11 saves but failed to convert 5 out of their 16 save opportunities, giving the Mariners a save rate of 68.8% in 36 save situations.
In terms of fielding, the Mariners have recorded 1,018 putouts, 322 assists, and 15 errors, leading to a fielding percentage of .989, good for 7th in the majors. They have executed 41 double plays and turned 68.5% of batted balls into outs across 3,054 innings (ranking them 26th in pro baseball).
Pitcher Luis Castillo has a career total of 1,444 innings with 1,524 strikeouts. With a career win-loss record of 84-87, Castillo has a FIP of 3.57 and has faced 5,984 batters. His ERA stands at 3.62 with 581 earned runs and a WHIP of 1.190. He has allowed 1,252 hits (7.8 hits per nine innings) and issued 466 walks.
The Chicago White Sox have a team OBP of .322 and maintain a batting average of .229 this season. They have experienced 347 strikeouts (7th in the league) and accumulated 280 base hits. The team has launched 45 home runs and recorded 145 RBIs. The White Sox possess a team SLG% of .380 and score an average of 4.19 runs per game (20th in the league). They have 38 doubles, drawn 148 walks, and driven in 155 runs.
Chicago’s team WHIP is 1.375 with a FIP of 4.40 for the season. They rank 12th in MLB for total hits allowed at 295. The White Sox pitching staff has given up 171 runs so far, contributing to a collective team ERA of 4.24 (154 earned runs). Their K/BB ratio is 8.10 (294 strikeouts to 155 walks), with 38 home runs allowed and an average of 4.70 runs permitted per 9 innings (19th in the league).
In 33 save situations, the White Sox have earned 13 holds and experienced 9 blown saves. Their bullpen has entered the game in 20 save situations and has successfully converted 11 saves. The inherited score percentage for White Sox relievers stands at 30.0% from 70 inherited runners. They have participated in 39 high-leverage scenarios and 46 occasions with runners on base, ranking 23rd in MLB with a save rate of 55.0%. The team has employed 130 relief pitchers this season.
This season, the White Sox have played 2,949 innings defensively, achieving an efficiency rate of 70.6% (13th in the majors). Their defense has turned 30 double plays and recorded a fielding percentage of .987 (11th in professional baseball), with 337 assists, 17 errors, and 983 putouts.
In his professional career, pitcher Anthony Kay has allowed 125 hits and has struck out 108 batters over 115 innings. Kay holds a career record of 5-3 with a 5.63 ERA, allowing 9.8 hits per nine innings. He has given up 72 earned runs, boasting a WHIP of 1.625 and a FIP of 5.5. With a K/BB ratio of 1.74, Kay has faced 536 batters throughout his career.
Who will secure the win in tonight’s MLB matchup against the spread or moneyline?
Prediction: Support Chicago (+125)
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