MLB Prop Bets: Kansas City Royals vs Arizona Diamondbacks (September 8, 2026)
The Arizona Diamondbacks (77-68) face the Kansas City Royals (64-81) at Kauffman Stadium on Tuesday at 7:40pm (ET). Let's take a look at the MLB Prop Bets for the matchup. Corbin Burnes is the probable pitcher for the Diamondbacks, while Michael Wacha is the probable pitcher for the Royals. The Diamondbacks are favored to win at -120, while the Royals are at -101. The total runs line is set at 9.0, with OVER at -120 and UNDER at +100.
- The Diamondbacks (+135) have an 81-64 Run Line record this season, while the Royals (-163) hold a record of 73-72.
- The Diamondbacks have a 59-77-9 O/U record this season (meaning 59 games have gone over the total runs line, 77 have gone under and nine have resulted in a push). The Royals have a 66-73-6 O/U record.
Scoring Insights
- The Diamondbacks are averaging 4.4 runs per game this season (17th in the league). Comparatively, the Royals are averaging 4.3 (21st).
- In the field, the Diamondbacks are allowing 4.4 runs per game this season (15th in the league), while the Royals are allowing an average of 4.9 runs (25th).
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 .242 (ranking 18th in the Major leagues), while the Royals are batting .247 (13th).
Home Runs
- In terms of total home runs this season, the Royals have hit 151 (T22nd in the Major Leagues). Meanwhile, the Diamondbacks have managed 141 (26th).
Runs Batted In
- Finally, looking at their runs batted in, the Diamondbacks have recorded 611 RBIs to rank 17th in the MLB this season. Comparatively, the Royals have recorded 592 RBIs to rank 21st.
Pitching Insights:
Earned Run Average
- The Royals have an earned run average of 4.69 this season (27th in the Majors), while The Diamondbacks have an ERA of 4.12 (14th).
Strikeouts
- Turning our attention to total strikeouts, the Diamondbacks have recorded 999 this season, ranking 29th in the MLB. Meanwhile, the Royals rank 28th for total strikeouts, recording 1054.
Opponent Batting Average
- Opponents are batting an average of .258 against the Royals this season (28th in the Major Leagues). Comparatively, the Diamondbacks' opponents are at .249 (20th).
First Innings Moneyline
- Here are their first innings moneyline records in 2026.
| Total | Home | Road | Favorite | Underdog | Neutral | Last 10 | |
|---|---|---|---|---|---|---|---|
| Diamondbacks | 30-40-75 | 18-15-37 | 12-25-36 | 17-13-29 | 13-27-46 | 0-0-2 | 0-3-7 |
| Royals | 33-36-76 | 19-19-35 | 14-17-41 | 10-14-28 | 23-22-48 | 0-0-0 | 2-3-5 |
Lead After Three Innings
The Diamondbacks are -105 to lead after three innings, while the Royals are -125.
- Here are their records after the first three innings in 2026.
| Total | Home | Road | Favorite | Underdog | Neutral | Last 10 | |
|---|---|---|---|---|---|---|---|
| Diamondbacks | 44-68-33 | 27-25-18 | 16-42-15 | 25-19-15 | 19-49-18 | 1-1-0 | 2-4-4 |
| Royals | 46-65-34 | 28-30-15 | 18-35-19 | 15-25-12 | 31-40-22 | 0-0-0 | 2-5-3 |
NRFI/YRFI
The NRFI market is paying -105 and the YRFI is paying -125.
- The NRFI is 66-79 in Diamondbacks games this season. The Royals have a 71-74 NRFI record.
Last Time They Met
The Diamondbacks recorded a 5-4 extra innings victory over the Royals at Kauffman Stadium yesterday. Despite being on the wrong side of that result, Salvador Perez went yard in that matchup, hitting a home run to go with 3 RBIs. The Diamondbacks have now won three straight at Kauffman Stadium against the Royals.
