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MLBGame PreviewsChicago White Sox at Seattle Mariners
Chicago White SoxChicago White Sox
@
T-Mobile Park
Seattle MarinersSeattle Mariners

Match Predictor

Pre-match Prediction
Chicago White Sox
@
Seattle Mariners
Chicago White Sox 40%Seattle Mariners 60%
Market LinesRun Line: Seattle Mariners -0.5Total: O/U 7
Model: Over 7
Model projects 7.3 total runs vs 7 line

Chicago White Sox

0022446688101012121414OVERUNDERO/U 7Runs ScoredRuns Allowed
All Over 7
63%
29/46
MLB: 48%
Starter
100%
6/6
vs SEA
33%
1/3
Avg Total
9.3
MLB: 8.9
Game Starter (6) Last Starter vs SEA vs SEA (3)
Noah Schultz #22 · LHP · Age 23
4.91
ERA (2026)
8.0
K/9 (2026)
6
Starts (2026)
10.7
Avg Total (2026)
Last 3:
ND KC (May 13): 4.1IP, 3ER, 3K
L @LAA (May 06): 3.2IP, 7ER, 3K
W @SD (May 01): 6.0IP, 0ER, 2K
Bullpen (2026 Season)Average
ERA: 3.93MLB Avg: 3.9511 relievers
Workload Alert: Allowed 10 runs on 2026-05-15 vs CHC. Bullpen arms likely still recovering.
Recent: W 6-5W 6-2L 5-10W 8-3W 9-8
Lineup vs Noah Schultz (Career)
No career matchup data — first meaningful meeting

Seattle Mariners

Bullpen ERA 2.82 (elite). Should hold late-inning leads.
0022446688101012121414OVERUNDERO/U 7Runs ScoredRuns Allowed
All Over 7
48%
23/48
MLB: 48%
Starter
44%
4/9
vs CHW
33%
1/3
Avg Total
8.1
MLB: 8.9
Game Starter (9) Last Starter vs CHW vs CHW (3)
Bryan Woo #22 · RHP · Age 26
3.91
ERA (2026)
8.0
K/9 (2026)
9
Starts (2026)
8.8
Avg Total (2026)
Last 3:
W @HOU (May 12): 6.0IP, 2ER, 9K
W ATL (May 06): 6.0IP, 0ER, 9K
ND KC (May 01): 6.0IP, 6ER, 2K
vs CHW: ND (Jul 27 2024): 4.0 IP, 0 ER, 3 K
Bullpen (2026 Season)Good
ERA: 2.82MLB Avg: 3.957 relievers
Workload Alert: Allowed 8 runs on 2026-05-17 vs SD. Bullpen arms likely still recovering.
Recent: L 3-4W 8-3L 0-2L 4-7L 3-8
Lineup vs Bryan Woo (Career)
BatterPosPAAVGOPSHR
Andrew BenintendiDH10.2220.8561
Randal GrichukRF5.2000.6000
Colson MontgomerySS3.0000.0000
Derek HillRF2.0000.5000
Edgar QueroC2.0000.0000
Tristan PetersCF2.0000.0000
7 batters with no matchup history
Our Top PicksLive Odds
Top PickChicago White Sox +1.5 (-152) MEDIUM con
Chicago White Sox +1.5 (-152) MEDIUM confidence. Our model's directional output does not support asking the Mariners to win by two or more runs agains...
PickOver 7.0 Total Runs (-120) LOW confidenc
Over 7.0 Total Runs (-120) LOW confidence. Our model's directional read is in line with the 7.0 market, so this edge is not model-driven. The specific...
PickNoah Schultz Under 4.5 Strikeouts (-114)
Noah Schultz Under 4.5 Strikeouts (-114) MEDIUM confidence. Schultz has posted 3, 3, and 2 strikeouts across his last three starts. His season K/9 of ...

Chicago White Sox vs Seattle Mariners Game Preview

The starting matchup on tonight's MLB card at T-Mobile Park tells the whole story. Bryan Woo has been sharp: a 3.91 ERA through 53 innings in 2026, nine strikeouts in each of his last two starts against Atlanta and Houston, and six days of extended rest heading into this one. He relies on late movement and deception, and the numbers hold up. Career line against this Chicago roster: nine strikeouts across seven innings in August 2025. Now look at who answers for the Chicago White Sox. Noah Schultz, 23 years old and left-handed, with a 6.45 BB/9 in 2026. That is 21 walks in 29.1 innings. He has logged 3, 3, and 2 strikeouts in his last three outings. His last two starts lasted 4.1 innings and 3.2 innings respectively. The walk rate is not a blip. It is a structural problem, and every game Schultz starts carries a first-inning time bomb attached to it.

The Seattle Mariners are hosting a White Sox club that is genuinely rolling. Chicago is 7-3 in its last 10 games, sits at 24-22 overall, and ranks second in MLB in home runs. The team OPS of .733 ranks eighth league-wide. Murakami leads the club with 17 home runs in 199 plate appearances, carries a .962 OPS against right-handed pitching, and has posted a 1.023 OPS over the last seven days. Montgomery is right behind him with 13 home runs, an .871 OPS against righties, and a 1.271 OPS over the past week. These are not paper numbers. Chicago's offense has been consistently productive for two months, bailing out a rotation with real command problems, which tells you the lineup is legitimately elite rather than running hot on a soft schedule.

Seattle arrives in rougher shape. The Mariners are 12-14 at home and just dropped three straight to San Diego, allowing 17 runs across that series. Brendan Donovan is on the injured list with a left groin strain, and GM Justin Hollander was direct about how the club views the replacement. He called up 20-year-old prospect Colt Emerson and stated plainly: "This is not a 15 at-bat or 20 at-bat tryout to see if he's capable of taking the job and running with it for the rest of the year." Emerson arrives with three career major league plate appearances. His debut tonight comes against a lineup that hits the ball over fences at a rate only one team in baseball can match.

T-Mobile Park plays as a pitcher-friendly environment, with a 0.95 run factor and a 0.90 home run factor. That matters in theory. In practice, park factors assume a pitcher can stay in the game long enough for suppressive dimensions to take hold. Schultz's last two starts ended after 4.1 and 3.2 innings. If he exits after four high-pitch-count innings, as recent trends strongly suggest, the park becomes largely irrelevant to the run total. On the Woo side, the Chicago lineup is largely cold against his arsenal. Montgomery is hitless across three career plate appearances against Woo, all from 2025. Benintendi carries 10 career PA against Woo with a .856 OPS overall, but his most recent three-PA sample from 2025 produced a .000 OPS. Most of the White Sox roster has no prior exposure to him at all. Cold hitters facing a pitcher who lives on deception and late movement is the formula Woo has been executing on throughout May.

Chicago White Sox vs Seattle Mariners Key Insights

  • Schultz carries a 6.45 BB/9 and has issued four or five walks in each of his last three starts. He has not completed five innings since May 1. Free baserunners against a lineup ranked second in MLB in home runs do not require clean contact to score.
  • Woo has struck out nine batters in each of his last two starts and nine specifically against Chicago in August 2025. The bulk of tonight's White Sox lineup has zero career plate appearances against him. Cold hitters facing a pitcher who generates deception and late movement is the ideal strikeout setup.
  • Chicago's power core is the primary upside lever in this game. Murakami (17 HR, .962 OPS vs RHP, 1.023 OPS over the last seven days) and Montgomery (13 HR, 1.271 OPS over the last seven days) are each capable of turning a single mistake pitch into a lead-changing moment. At +295 and +360 respectively, their per-game home run rates suggest the market may be undervaluing both.
  • Seattle is 12-14 at home and 4-6 in its last 10 games. The Padres sweep exposed real starting pitching fragility at the top of the rotation. Colt Emerson, debuting with virtually no major league experience, adds lineup uncertainty in a high-leverage game.
  • Josh Naylor carries a .467 OPS against left-handed pitching and has posted a .563 OPS over the last seven days. Facing Schultz, a southpaw, Naylor is in an unfavorable spot regardless of the extra plate appearances that Schultz's walks will generate.
  • Seattle's bullpen holds a significant edge. The Mariners' relievers carry a 2.82 ERA against Chicago's 3.93. If Schultz exits early, which his recent trend makes the baseline expectation, the White Sox will lean on a bullpen that is both weaker and potentially strained across multiple innings in a close game.

Chicago White Sox vs Seattle Mariners Betting Picks

Picks made May 18, 2026 at 04:13 AM ET. Odds shown reflect current market prices.

Over 7.0 Total Runs (-120) LOW confidenc
Over 7.0 Total Runs (-120) LOW confidence. Our model's directional read is in line with the 7.0 market, so this edge is not model-driven. The specific non-model factor is Schultz's command profile. He issued five walks in 4.1 innings against Kansas City and four walks in 3.2 innings against the Angels. High-pitch early exits create bullpen exposure in a game where Chicago's power hitters need only a free pass and a contact event to score. T-Mobile's pitcher-friendly dimensions are a genuine counterweight, and the low-confidence tag reflects the thin gap at the number. Size accordingly.
Moneyline
Moneyline: No Pick. The market implies roughly 40% for the White Sox at +148. Chicago's offensive surge and Seattle's home struggles are real arguments for the underdog price. But the model's directional read and the market pricing land too close to each other to identify a meaningful edge. Passing on the moneyline is the honest position here, and it is a credibility-building one.
Analysis insight — no specific bet associated
Noah Schultz Under 4.5 Strikeouts (-114)
Noah Schultz Under 4.5 Strikeouts (-114) MEDIUM confidence. Schultz has posted 3, 3, and 2 strikeouts across his last three starts. His season K/9 of 7.99 suggests upside that simply has not materialized recently, because walks eat plate appearances that would otherwise be strikeout opportunities. His last two outings ended before the fifth inning, capping the total strikeout ceiling before he can even approach the line. Under at -114 is reasonable value against a pitcher in a demonstrable K-rate collapse.
Bryan Woo Over 6.5 Strikeouts (+102) LOW
Bryan Woo Over 6.5 Strikeouts (+102) LOW confidence. Woo delivered nine strikeouts in each of his last two starts against Atlanta and Houston, and nine specifically against Chicago in August 2025. The market prices this over at essentially even money (+102), which undersells the recent output and the lineup's near-total unfamiliarity with his arsenal. The primary risk is his May 1 outing against Kansas City, where he posted only two strikeouts. That outlier is real. But two of three recent starts at nine strikeouts is a trend worth backing at plus money against a lineup that has little data on him.
Josh Naylor Under 0.5 Hits (+136) MEDIUM
Josh Naylor Under 0.5 Hits (+136) MEDIUM confidence. Naylor's .467 OPS against left-handed pitching is among the weakest platoon splits in Seattle's lineup, and Schultz is a southpaw tonight. His seven-day OPS of .563 indicates a broader cold stretch. Getting plus money on the under for a hitter with a sub-.500 platoon OPS facing a lefthander is a clean value spot, even accounting for the extra plate appearances that Schultz's walks will generate.
Munetaka Murakami to Hit a Home Run (+29
Munetaka Murakami to Hit a Home Run (+295) MEDIUM confidence. Murakami has 17 home runs in 199 plate appearances this season, a pace that translates to roughly one home run every 11 to 12 plate appearances. The market implies 25.3% at +295, which looks low given that production rate and his .962 OPS against right-handed pitching. He enters tonight with a 1.023 OPS over the last seven days. No career matchup data exists against Woo, which introduces some uncertainty, but the underlying power rate at this price is difficult to fade.
Colson Montgomery to Hit a Home Run (+36
Colson Montgomery to Hit a Home Run (+360) LOW confidence. Montgomery has 13 home runs with an .871 OPS against right-handed pitching and a 1.271 OPS over the last seven days. The market implies 21.7% at +360, which appears to underweight his actual per-game home run pace. The negative flag is concrete: Montgomery is hitless across three career plate appearances against Woo, all from 2025. The sample is too small to carry decisive weight, but it is not nothing. Low confidence reflects that specific BvP data. The power profile at this price still warrants a small-unit position.
SGP
SGP: White Sox +1.5 / Over 7.0 / Murakami Home Run / Schultz Under 4.5 Strikeouts. These four legs build on one another. A high-scoring game creates the run environment for Murakami's home run to land in a meaningful spot. White Sox batters making contact against Schultz rather than striking out directly suppresses his K total while simultaneously adding to the run total. The White Sox +1.5 leg benefits from both offenses contributing, which is exactly the scenario the Over requires. The legs are correlated in the right direction, and combining them into a same-game parlay lets the thesis work as a single position.
YRFI (+100). Schultz pitches the first i
YRFI (+100). Schultz pitches the first inning for Chicago, and he has allowed six earned runs in 3.2 innings and three earned runs in 4.1 innings in his two most recent starts. His 4.91 ERA comes with a 6.45 BB/9 that reflects a pitcher who routinely creates dangerous counts and bases-loaded situations from the first batter he faces. Chicago is 7-3 in its last 10 games and ranks second in MLB in home runs. The White Sox batting first against a pitcher with this command profile at even money is a position worth taking.

Key Players

Batting AverageCHW
Chase Meidroth
.262Batting Average
2B
Home RunsCHW
Munetaka Murakami
17Home Runs
1B
Runs Batted InCHW
Munetaka Murakami
32Runs Batted In
1B
Earned Run AverageCHW
Davis Martin
1.61Earned Run Average
SP
WinsCHW
Davis Martin
6Wins
SP
StrikeoutsCHW
Davis Martin
59Strikeouts
SP
Batting AverageSEA
Randy Arozarena
.301Batting Average
LF
Home RunsSEA
Luke Raley
10Home Runs
RF
Runs Batted InSEA
Luke Raley
27Runs Batted In
RF
Earned Run AverageSEA
Emerson Hancock
3.02Earned Run Average
SP
WinsSEA
George Kirby
5Wins
SP
StrikeoutsSEA
Logan Gilbert
57Strikeouts
SP

Recent Form

Chicago White Sox
W6-5Kansas City Royals
W6-2Kansas City Royals
L10-5Chicago Cubs
W8-3Chicago Cubs
Seattle Mariners
W8-3Houston Astros
L2-0San Diego Padres
L7-4San Diego Padres
L8-3San Diego Padres

Chicago White Sox vs Seattle Mariners Summary

Start with the mound, as always. Noah Schultz's command breakdown is the single most important variable in this game, and our model's directional read is in line with the 7.0 total market. That alignment means the Over is not a screaming model edge. But the specific, concrete, non-model factor that tips the scale is Schultz himself. He has walked four or more batters in each of his last three starts and has not completed five innings since early May. When a pitcher with a 6.45 BB/9 faces Murakami and Montgomery in the same lineup, free baserunners are not theoretical risk. They are outcomes that have been converting at an elite rate for two months. The White Sox +1.5 run line is the cleaner play at medium confidence, with the projected scoring environment clearly not supporting a two-run Mariners victory against this offense.

The Woo strikeout prop at +102 is worth a look for anyone who wants exposure to the Seattle side without laying heavy moneyline juice. Nine strikeouts in each of his last two starts is Woo operating at a groove, and lineup unfamiliarity from Chicago amplifies that setup. The Murakami and Montgomery home run props are not locks, particularly given that the bulk of Chicago's roster is cold against Woo, but both are priced in a range where the underlying power rates suggest market undervaluation. The SGP combining White Sox +1.5, Over 7.0, the Murakami home run, and the Schultz under-strikeouts builds correlated legs in the right direction. The YRFI at even money is one of the more straightforward positions on the board given who is throwing the first pitch for Chicago.

The caveat worth stating plainly: Schultz threw six shutout innings in San Diego on May 1, three weeks ago. He followed that with seven earned runs in 3.2 innings against the Angels and three earned runs in 4.1 innings against Kansas City. The ceiling exists. Variance is real, and one clean outing from him compresses the entire run environment significantly. T-Mobile's suppressive dimensions are a genuine counterweight to every Over argument in this ballpark. These are edges, not certainties. Size the positions accordingly and give appropriate weight to the low-confidence tags where they appear. For the full slate, see our MLB picks today, NRFI picks, and player props.

Head-to-Head History

Season SeriesCHW win series 2-1
DateMatchupResult
Feb 24, 2026CHW @ SEACHWCHW 12-10
Mar 07, 2026CHW @ SEACHWCHW 5-1
Mar 23, 2026SEA @ CHWSEASEA 4-2

Compare odds for CWS @ SEA

Frequently Asked Questions

MLBGame PreviewsChicago White Sox at Seattle Mariners