MLB Prop Bets: Seattle Mariners vs Arizona Diamondbacks (May 30, 2026)
The Arizona Diamondbacks (31-25) face the Seattle Mariners (29-29) at T-Mobile Park on Saturday at 10:10pm (ET). Let's take a look at the MLB Prop Bets for the matchup. Ryne Nelson is the probable pitcher for the Diamondbacks, while Bryan Woo is the probable pitcher for the Mariners. The Mariners are favored to win at -163, while the Diamondbacks are at +135. The total runs line is set at 7.0, with OVER at -107 and UNDER at -113.
- The Diamondbacks (-168) have a 34-22 Run Line record this season, while the Mariners (+139) hold a record of 24-34.
- The Diamondbacks have a 26-24-6 O/U record this season (meaning 26 games have gone over the total runs line, 24 have gone under and six have resulted in a push). The Mariners have a 27-29-2 O/U record.
Scoring Insights
- The Diamondbacks are averaging 4.7 runs per game this season (10th in the league). Comparatively, the Mariners are averaging 4.3 (17th).
- In the field, the Diamondbacks are allowing 4.4 runs per game this season (15th in the league), while the Mariners are allowing an average of 3.8 runs (5th).
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 Diamondbacks are at .249 (ranking 5th in the Major leagues), while the Mariners are batting .233 (22nd).
Home Runs
- In terms of total home runs this season, the Mariners have hit 70 (T7th in the Major Leagues). Meanwhile, the Diamondbacks have managed 49 (T25th).
Runs Batted In
- Finally, looking at their runs batted in, the Diamondbacks have recorded 252 RBIs to rank T8th in the MLB this season. Comparatively, the Mariners have recorded 241 RBIs to rank 13th.
Pitching Insights:
Earned Run Average
- The Mariners have an earned run average of 3.57 this season (5th in the Majors), while The Diamondbacks have an ERA of 4.05 (16th).
Strikeouts
- Turning our attention to total strikeouts, the Diamondbacks have recorded 401 this season, ranking 30th in the MLB. Meanwhile, the Mariners rank 10th for total strikeouts, recording 492.
Opponent Batting Average
- Opponents are batting an average of .249 against the Mariners this season (22nd in the Major Leagues). Comparatively, the Diamondbacks' opponents are at .241 (16th).
First Innings Moneyline
- Here are their first innings moneyline records in 2026.
| Total | Home | Road | Favorite | Underdog | Neutral | Last 10 | |
|---|---|---|---|---|---|---|---|
| Diamondbacks | 13-15-28 | 7-5-14 | 6-10-12 | 7-3-13 | 6-12-15 | 0-0-2 | 2-2-6 |
| Mariners | 17-14-27 | 11-9-10 | 6-5-17 | 17-13-22 | 0-1-5 | 0-0-0 | 5-1-4 |
Lead After Three Innings
- Here are their records after the first three innings in 2026.
| Total | Home | Road | Favorite | Underdog | Neutral | Last 10 | |
|---|---|---|---|---|---|---|---|
| Diamondbacks | 23-23-10 | 13-6-7 | 9-16-3 | 14-4-5 | 9-19-5 | 1-1-0 | 6-3-1 |
| Mariners | 26-18-14 | 14-10-6 | 12-8-8 | 22-17-13 | 4-1-1 | 0-0-0 | 7-1-2 |
NRFI/YRFI
The NRFI market is paying -130 and the YRFI is paying +100.
- The NRFI is 24-32 in Diamondbacks games this season. The Mariners have a 24-34 NRFI record.
Last Time They Met
The Mariners recorded a 7-6 extra innings victory over the Diamondbacks at T-Mobile Park yesterday. J.P. Crawford was crushing the ball in that matchup, hitting 2 home runs and recording 3 RBIs. That result snapped the Diamondbacks' four-game winning streak against the Mariners.
