MLB Prop Bets: Boston Red Sox vs Arizona Diamondbacks (August 19, 2026)
The Arizona Diamondbacks (66-61) face the Boston Red Sox (68-58) at Fenway Park on Wednesday at 4:10pm (ET). Let's take a look at the MLB Prop Bets for the matchup. Brandon Pfaadt is the probable pitcher for the Diamondbacks, while Payton Tolle is the probable pitcher for the Red Sox. The Red Sox are favored to win at -149, while the Diamondbacks are at +123. The total runs line is set at 8.5, with OVER at -105 and UNDER at -114.
- The Diamondbacks (-174) have a 70-57 Run Line record this season, while the Red Sox (+143) hold a record of 62-64.
- The Diamondbacks have a 52-66-9 O/U record this season (meaning 52 games have gone over the total runs line, 66 have gone under and nine have resulted in a push). The Red Sox have a 58-64-4 O/U record.
Scoring Insights
- The Diamondbacks are averaging 4.5 runs per game this season (15th in the league). Comparatively, the Red Sox are averaging 4.5 (14th).
- In the field, the Diamondbacks are allowing 4.5 runs per game this season (18th in the league), while the Red Sox are allowing an average of 3.8 runs (3rd).
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 .243 (ranking 17th in the Major leagues), while the Red Sox are batting .250 (7th).
Home Runs
- In terms of total home runs this season, the Red Sox have hit 128 (24th in the Major Leagues). Meanwhile, the Diamondbacks have managed 125 (27th).
Runs Batted In
- Finally, looking at their runs batted in, the Diamondbacks have recorded 544 RBIs to rank T15th in the MLB this season. Comparatively, the Red Sox have recorded 544 RBIs to rank T15th.
Pitching Insights:
Earned Run Average
- The Red Sox have an earned run average of 3.51 this season (3rd in the Majors), while The Diamondbacks have an ERA of 4.17 (18th).
Strikeouts
- Turning our attention to total strikeouts, the Diamondbacks have recorded 855 this season, ranking 29th in the MLB. Meanwhile, the Red Sox rank 12th for total strikeouts, recording 1073.
Opponent Batting Average
- Opponents are batting an average of .239 against the Red Sox this season (13th in the Major Leagues). Comparatively, the Diamondbacks' opponents are at .252 (25th).
First Innings Moneyline
- Here are their first innings moneyline records in 2026.
| Total | Home | Road | Favorite | Underdog | Neutral | Last 10 | |
|---|---|---|---|---|---|---|---|
| Diamondbacks | 29-34-64 | 17-13-31 | 12-21-31 | 16-10-25 | 13-24-39 | 0-0-2 | 5-2-3 |
| Red Sox | 28-36-62 | 17-15-30 | 11-21-32 | 20-22-43 | 8-14-19 | 0-0-0 | 2-2-6 |
Lead After Three Innings
- Here are their records after the first three innings in 2026.
| Total | Home | Road | Favorite | Underdog | Neutral | Last 10 | |
|---|---|---|---|---|---|---|---|
| Diamondbacks | 41-59-27 | 26-20-15 | 14-38-12 | 23-15-13 | 18-44-14 | 1-1-0 | 5-4-1 |
| Red Sox | 53-45-28 | 31-20-11 | 22-25-17 | 40-27-18 | 13-18-10 | 0-0-0 | 4-3-3 |
NRFI/YRFI
The NRFI market is paying -125 and the YRFI is paying -105.
- The NRFI is 56-71 in Diamondbacks games this season. The Red Sox have a 60-66 NRFI record.
Last Time They Met
The Red Sox recorded an upset 9-4 victory over the Diamondbacks at Fenway Park yesterday. Mickey Gasper was unstoppable in that matchup, hitting a home run, a single and recording 2 RBIs. The Red Sox have now won three straight against the Diamondbacks.
