MLB Prop Bets: Boston Red Sox vs Kansas City Royals (September 12, 2026)
The Kansas City Royals (66-82) face the Boston Red Sox (80-68) at Fenway Park on Saturday at 4:10pm (ET). Let's take a look at the MLB Prop Bets for the matchup. Randy Dobnak is the probable pitcher for the Royals, while Ranger Suarez is the probable pitcher for the Red Sox. The Red Sox are favored to win at -192, while the Royals are at +158. The total runs line is set at 8.5, with OVER at -108 and UNDER at -112.
- The Royals (-131) have a 75-73 Run Line record this season, while the Red Sox (+109) hold a record of 70-78.
- The Royals have a 66-76-6 O/U record this season (meaning 66 games have gone over the total runs line, 76 have gone under and six have resulted in a push). The Red Sox have a 69-75-4 O/U record.
Scoring Insights
- The Royals are averaging 4.3 runs per game this season (22nd in the league). Comparatively, the Red Sox are averaging 4.4 (17th).
- In the field, the Royals are allowing a whopping 4.9 runs per game this season (25th in the league), while the Red Sox are allowing an average of 3.9 runs (4th).
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 Royals are at .247 (ranking 11th in the Major leagues), while the Red Sox are batting .248 (10th).
Home Runs
- In terms of total home runs this season, the Red Sox have hit 154 (T23rd in the Major Leagues). Meanwhile, the Royals have managed 154 (T23rd).
Runs Batted In
- Finally, looking at their runs batted in, the Royals have recorded 602 RBIs to rank 21st in the MLB this season. Comparatively, the Red Sox have recorded 625 RBIs to rank T16th.
Pitching Insights:
Earned Run Average
- The Red Sox have one of the strongest earned run averages this season, sitting at 3.62 (4th in the Majors), while the Royals are at the opposite end of the scale with an ERA of 4.63 (25th).
Strikeouts
- Turning our attention to total strikeouts, the Royals have recorded 1075 this season, ranking 28th in the MLB. Meanwhile, the Red Sox rank 10th for total strikeouts, recording 1275.
Opponent Batting Average
- Opponents are batting an average of .243 against the Red Sox this season (16th in the Major Leagues). Comparatively, the Royals' opponents are at .258 (28th).
First Innings Moneyline
- Here are their first innings moneyline records in 2026.
| Total | Home | Road | Favorite | Underdog | Neutral | Last 10 | |
|---|---|---|---|---|---|---|---|
| Royals | 34-36-78 | 19-19-37 | 15-17-41 | 10-14-29 | 24-22-49 | 0-0-0 | 3-2-5 |
| Red Sox | 31-41-76 | 18-18-37 | 13-23-39 | 22-27-55 | 9-14-21 | 0-0-0 | 1-2-7 |
Lead After Three Innings
- Here are their records after the first three innings in 2026.
| Total | Home | Road | Favorite | Underdog | Neutral | Last 10 | |
|---|---|---|---|---|---|---|---|
| Royals | 48-65-35 | 29-30-16 | 19-35-19 | 15-25-13 | 33-40-22 | 0-0-0 | 4-3-3 |
| Red Sox | 61-56-31 | 35-27-11 | 26-29-20 | 47-36-21 | 14-20-10 | 0-0-0 | 3-5-2 |
NRFI/YRFI
- The NRFI is 73-75 in Royals games this season. The Red Sox have a 71-77 NRFI record.
Last Time They Met
The Royals recorded an upset 3-2 victory over the Red Sox at Fenway Park yesterday. Carter Jensen went yard en route to that victory, hitting a home run to go with an RBI. That result snapped the Red Sox's three-game winning streak against the Royals.
