MLB Prop Bets: Chicago White Sox vs Seattle Mariners (May 8, 2026)
The Seattle Mariners (18-20) face the Chicago White Sox (17-20) at Rate Field on Friday at 7:40pm (ET). Let's take a look at the MLB Prop Bets for the matchup. Emerson Hancock is the probable pitcher for the Mariners, while Sean Burke is the probable pitcher for the White Sox. The Mariners are favored to win at -143, while the White Sox are at +119. The total runs line is set at 8.0, with OVER at -107 and UNDER at -113.
- The Mariners (+119) have a 15-23 Run Line record this season, while the White Sox (-143) hold a record of 18-19.
- The Mariners have a 17-20-1 O/U record this season (meaning 17 games have gone over the total runs line, 20 have gone under and one has resulted in a push). The White Sox have a 20-17-0 O/U record.
Scoring Insights
- The Mariners are averaging 4.0 runs per game this season (T24th in the league). Comparatively, the White Sox are averaging 4.2 (20th).
- In the field, the Mariners are allowing only 3.9 runs per game this season (6th in the league), while the White Sox are allowing an average of 4.6 runs (19th).
Let's take a look at how these teams perform in some other key statistical areas.
Batting Insights:
Batting Average
- Looking at their batting averages this season, the Mariners are at .229 (ranking 27th in the Major leagues), while the White Sox are batting .229 (29th).
Home Runs
- In terms of total home runs this season, the White Sox have hit 45 (T8th in the Major Leagues). Meanwhile, the Mariners have managed 42 (T12th).
Runs Batted In
- Finally, looking at their runs batted in, the Mariners have recorded 148 RBIs to rank 22nd in the MLB this season. Comparatively, the White Sox have recorded 145 RBIs to rank T25th.
Pitching Insights:
Earned Run Average
- The White Sox have an earned run average of 4.23 this season (18th in the Majors), while The Mariners have an ERA of 3.63 (6th).
Strikeouts
- Turning our attention to total strikeouts, the Mariners have recorded 318 this season, ranking 18th in the MLB. Meanwhile, the White Sox rank 22nd for total strikeouts, recording 294.
Opponent Batting Average
- Opponents are batting an average of .242 against the White Sox this season (17th in the Major Leagues). Comparatively, the Mariners' opponents are at .255 (22nd).
First Innings Moneyline
- Here are their first innings moneyline records in 2026.
| Total | Home | Road | Favorite | Underdog | Neutral | Last 10 | |
|---|---|---|---|---|---|---|---|
| Mariners | 9-10-19 | 8-8-7 | 1-2-12 | 9-9-15 | 0-1-4 | 0-0-0 | 1-2-7 |
| White Sox | 10-6-21 | 3-2-10 | 7-4-11 | 0-1-5 | 10-5-16 | 0-0-0 | 1-1-8 |
Lead After Three Innings
- Here are their records after the first three innings in 2026.
| Total | Home | Road | Favorite | Underdog | Neutral | Last 10 | |
|---|---|---|---|---|---|---|---|
| Mariners | 15-14-9 | 11-8-4 | 4-6-5 | 12-13-8 | 3-1-1 | 0-0-0 | 4-4-2 |
| White Sox | 17-11-9 | 7-4-4 | 10-7-5 | 0-3-3 | 17-8-6 | 0-0-0 | 5-2-3 |
NRFI/YRFI
The NRFI market is paying -130 and the YRFI is paying +100.
- The NRFI is 16-22 in Mariners games this season. The White Sox have a 20-17 NRFI record.
Last Time They Met
The Mariners recorded a 4-3 extra innings victory over the White Sox at T-Mobile Park when these teams last met on August 7, 2025. Randy Arozarena went yard en route to that victory, hitting a home run to go with 2 RBIs. The Mariners have now won four straight against the White Sox.
