Kansas City Royals vs Washington Nationals All-Time Record

Interleague
Kansas City Royals
Washington Nationals
Nationals lead Royals18to12since 2002

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

2026 season series: Nationals lead 2-1

By

Data updated 5 min read

At a glance

Current-feed analysis, 2002 to 2026

Kansas City Royals vs Washington Nationals insights

Current-feed record
+6wins for Nationals
60% Nationals · 40% Royals

Royals have closed the gap since the 2023 schedule change: 7-5.

Recent form
10-10last 20

Royals won 6-2 on Jun 17, 2026

Where it matters
0Postseason games

No postseason meetings since 2002.

Schedule context
  • Nationals built the series lead before the 2023 schedule change, taking 13 of 18 decided meetings (72%).
  • Since the schedule balanced out they are 5-7, or 42% to Nationals.

Royals vs Nationals interleague history by season

Kansas City Royals and Washington Nationals first met in 2002, so all 30 meetings across 10 seasons sit in the current feed. Interleague scheduling makes meeting frequency uneven, so the season table matters more than a raw average.

Active seasons
10
With at least one meeting since 2002
Busiest season
2026
3 meetings
Per active season
3.0
Uneven interleague cadence
Win Percentage
12W
18W
KC
WSH
40%60%
Kansas City RoyalsWashington Nationals

Recent Games

Last 10 Games
Jun 17
WSH 2-6 KC
KC
Jun 16
WSH 6-4 KC
WSH
Jun 15
WSH 7-3 KC
WSH
Aug 13
KC 7-8 WSH
WSH
Aug 12
KC 8-5 WSH
KC
Aug 11
KC 7-4 WSH
KC
Sep 26
WSH 4-7 KC
KC
Sep 25
WSH 0-3 KC
KC
Sep 24
WSH 0-1 KC
KC
May 28
KC 3-2 WSH
KC
Last Meeting
Jun 17, 2026Final
WSH
2
HOME
KC
6
AWAY
Royalswon by4runs
Snapped Nationals' streak·Game 30 since 2002
Streaks & Momentum
Current Streak
Kansas City Royals won the most recent meeting
1
Avg. Margin of Victory
Games decided by 2.9 runs on average
2.9runs
Momentum (Last 10 vs Archive since 2002)
KC↑Trending Up
Last 1070%
Archive since 200240%
WSH↓Trending Down
Last 1030%
Archive since 200260%
Last 10 Results
KC / WSH

Record since 2002

Season Split & Biggest Wins
Regular season vs Postseason record, plus each team's largest margin of victory
Regular Season30 games
12
18
No postseason meetings appear since 2002.
Kansas City Royals Biggest Win
6–2+4 runs
Jun 17, 2026
Washington Nationals Biggest Win
13–2+11 runs
May 4, 2016
Decade Breakdown
Choose a decade to scope the current-feed page
Season by Season
Season ↓KC ↕WSH ↕Games ↕
2026123
2025213
2024303
2023123
2019123
2016123
2013123
2010123
2004123
2002033
Home / Away Split
6-9KC HOME9-6WSH HOME
AWAY
6-9
KC
AWAY
9-6
WSH
Retrosheet archiveComplete through 2025

Kansas City Royals vs Washington Nationals all-time record, 2002 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
27
Peak inning
1
Record game
22 runs
Two source windows. Current-feed sections: 30 games from 2002 to 2026. History Lab: 27 Retrosheet games from 2002 to 2025. The first refreshes with current finals; Retrosheet's published archive currently ends in 2025.Small historical sample: 27 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: 30 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
33.3%

Share of the 30 decided meetings settled by exactly one run.

Won by 2 or more
66.7%

A 2+ run margin crosses 1.5, but this is not a historical line result. Average gap: 2.9.

Average total
9runs

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

Home side wins
50%

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
7.51911
63.3%
8.5Closest to even1713
56.7%
9.51218
40%

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.

Washington Nationals
18 W · 60%1.67
Kansas City Royals
12 W · 40%2.50

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
20%vs 33.3% full archive
-13.3% in the last 20
Won by 2 or more
80%vs 66.7% full archive
+13.3% in the last 20
Average total
9.4 runsvs 9 runs full archive
+0.4 runs in the last 20

Seasons 2013 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 Nationals and Royals in the oddsmatcher.

Questions about this record: Kansas City Royals vs Washington Nationals

How do recent Kansas City Royals vs Washington Nationals results compare with the complete record?

Kansas City Royals have won 7 of the latest 10 decided meetings. Washington Nationals lead the decided record 18-12. The recent window is a subset of the complete series from 2002 through 2026, so the page reports the two separately.

When did the Kansas City Royals and Washington Nationals first play each other?

The Retrosheet archive's first recorded meeting for this pairing is Jun 18, 2002, when Washington Nationals beat Kansas City Royals 5-4 at home. The archive covers 27 meetings from 2002 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

Kansas City Royals and Washington Nationals have met 30 times in this archive, which covers the 2002 season onward.