Arizona Diamondbacks vs Kansas City Royals All-Time Record

Interleague
Arizona Diamondbacks
Kansas City Royals
Diamondbacks lead Royals24to19since 2001

Retrosheet history through 2025, plus 3 final games from the current feed.

2026 season series: Diamondbacks lead 2-1

By

Data updated 5 min read

At a glance

All-time since 2001 · current-feed analysis, 2002 to 2026

Arizona Diamondbacks vs Kansas City Royals insights

Current-feed record
+4wins for Diamondbacks
55% Diamondbacks · 45% Royals

The split has held steady across the schedule change: 7-5 since 2023.

Recent form
11-9last 20

Royals won 5-2 on Sep 9, 2026

Where it matters
0Postseason games

No postseason meetings since 2002.

Schedule context
  • Diamondbacks built the series lead before the 2023 schedule change, taking 15 of 28 decided meetings (54%).
  • Since the schedule balanced out they are 7-5, or 58% to Diamondbacks.

Diamondbacks vs Royals complete all-time series record

Arizona Diamondbacks and Kansas City Royals have met 43 times since 2001, never in the postseason. 3 meetings predate the current feed, which adds game-level detail from 2002.

History span
2001 to 2026
First and latest meeting
Before 2002
3
Meetings from the Retrosheet game logs
Since 2002
40
Meetings with game-level detail below
Win Percentage
22W
18W
ARI
KC
55%45%
Arizona DiamondbacksKansas City Royals

Recent Games

Last 10 Games
Sep 9
KC 5-2 ARI
KC
Sep 8
KC 3-5 ARI
ARI
Sep 7
KC 4-5 ARI
ARI
Jul 6
ARI 0-4 KC
KC
Jul 5
ARI 7-1 KC
ARI
Jul 4
ARI 3-9 KC
KC
Jul 24
KC 6-8 ARI
ARI
Jul 23
KC 2-6 ARI
ARI
Jul 22
KC 10-4 ARI
KC
Apr 26
ARI 2-0 KC
ARI
Last Meeting
Sep 9, 2026Final
KC
5
HOME
ARI
2
AWAY
Royalswon by3runs
Snapped Diamondbacks' streak·Game 40 since 2002
Streaks & Momentum
Current Streak
Kansas City Royals won the most recent meeting
1
Avg. Margin of Victory
Games decided by 3.6 runs on average
3.6runs
Momentum (Last 10 vs Archive since 2002)
ARI-Neutral
Last 1060%
Archive since 200255%
KC-Neutral
Last 1040%
Archive since 200245%
Last 10 Results
ARI / KC

Record since 2002

Season Split & Biggest Wins
Regular season vs Postseason record, plus each team's largest margin of victory
Regular Season40 games
22
18
No postseason meetings appear since 2002.
Arizona Diamondbacks Biggest Win
14–2+12 runs
Oct 1, 2017
Kansas City Royals Biggest Win
12–2+10 runs
Aug 5, 2014
Decade Breakdown
Choose a decade to scope the current-feed page
Season by Season
Season ↓ARI ↕KC ↕Games ↕
2026213
2025123
2024213
2023213
2022314
2017123
2014033
2012213
2011303
2009213
2008123
2005123
2003213

All 13 seasons are shown in the table above.

Home / Away Split
7-10ARI HOME8-15KC HOME
AWAY
15-8
ARI
AWAY
10-7
KC
Retrosheet archiveComplete through 2025

Arizona Diamondbacks vs Kansas City Royals all-time record, 2001 to 2025

Explore how this matchup changed by decade, where each lineup produced its runs, and the games that pushed the rivalry record book. This archive is a separate source window from the current-feed sections above, which start in 2002.

Games
40
Peak inning
EX
Record game
23 runs
Two source windows. Current-feed sections: 40 games from 2003 to 2026. History Lab: 40 Retrosheet games from 2001 to 2025. The first refreshes with current finals; Retrosheet's published archive currently ends in 2025.Small historical sample: 40 games. Era and inning rates describe these meetings, but should not be treated as a forecast.

Decade balance

Select an era to inspect pace, scoring and attendance.

The information used here was obtained free of charge from and is copyrighted by Retrosheet. Interested parties may contact Retrosheet at www.retrosheet.org.

Open source archive

Betting Context

Betting context since 2002

How this pairing has settled: run margins, totals and break-even prices derived from its historical record. These are final-score frequencies, not results against a closing line. We do not hold historical sportsbook prices for these games.

Small sample: 40 decided meetings, under the 50 we treat as the floor for a stable rate. Read the figures below as description, not a forecast. Interleague pairs meet in short bursts, so a single series can move any percentage here by several points.

One-run games
27.5%

Share of the 40 decided meetings settled by exactly one run.

Won by 2 or more
72.5%

A 2+ run margin crosses 1.5, but this is not a historical line result. Average gap: 3.6.

Average total
9.8runs

Final-score average without accounting for park, bullpen or weather.

Home side wins
37.5%

Share of decided meetings won by the listed home team.

Totals ladder

Where the combined score landed against the half-run lines a book normally posts. Half runs cannot push, so every meeting falls on one side.

LineOverUnderOver rate
7.52911
72.5%
8.52317
57.5%
9.5Closest to even1921
47.5%

Fair price from the base rate

The decimal price that corresponds exactly to each club's win share in this archive. It describes the record and does not estimate the next game.

Arizona Diamondbacks
22 W · 55%1.82
Kansas City Royals
18 W · 45%2.22

A base rate is not a forecast. Starting pitchers, lineups, injuries and venue all matter more to a single game than a multi-season head-to-head record.

Last 20 meetings vs full history

One-run games
25%vs 27.5% full archive
-2.5% in the last 20
Won by 2 or more
75%vs 72.5% full archive
+2.5% in the last 20
Average total
9.2 runsvs 9.8 runs full archive
-0.6 runs in the last 20

Seasons 2014 to 2026. The comparison shows whether the last 20 final scores differ from the longer archive, without assigning a cause or predicting what comes next.

View the break-even percentages in another odds format with the odds converter, or compare current prices for Diamondbacks and Royals in the oddsmatcher.

Questions about this record: Arizona Diamondbacks vs Kansas City Royals

When did the Arizona Diamondbacks and Kansas City Royals first play each other?

The Retrosheet archive's first recorded meeting for this pairing is Jun 8, 2001, when Arizona Diamondbacks won 11-4 away to Kansas City Royals. The archive covers 40 meetings from 2001 through 2025. The current feed starts in 2002 and is reported separately.

About Erik Andersson

Erik Andersson is SharkBetting's Content & Marketing Specialist. His published work focuses on betting methodology, market analysis, regulation and consumer education.

The source windows, derivations and update process for this data page are documented in the methodology above.

View full profile →

Methodology & Data Sources

Current MLB game logs come from the balldontlie API and cover the 2002 season onward. Scores and schedule anomalies are checked against the official MLB Stats API. Spring training is excluded, while results from earlier franchise identities are merged into the current club.

The all-time record and the History Lab use Retrosheet game logs through 2025, with inning lines, team totals, attendance, duration and ballpark fields when available. Final games after 2025 come from the current feed, and every section built on that feed alone is labeled as starting in 2002.

The betting context summarizes completed final scores only. It contains no sportsbook closing lines and summarizes only completed games. Report a possible error through our contact page with the matchup and game date.

Read the full H2H data methodology →

Last updated Sources: balldontlie, MLB Stats API, Retrosheet

Arizona Diamondbacks and Kansas City Royals have met 40 times in this archive, which covers the 2003 season onward.