Boston Red Sox vs Kansas City Royals H2H Record

American League
Boston Red Sox
Kansas City Royals
Red Sox lead Royals98to59since 2002

Current-feed record from 2002 through 2026.

2026 season series: Red Sox lead 3-0

By

Data updated 5 min read

At a glance

Current-feed analysis, 2002 to 2026

Boston Red Sox vs Kansas City Royals insights

Current-feed record
+39wins for Red Sox
62% Red Sox · 38% Royals

Red Sox have pulled further ahead since 2023: 16-6.

Recent form
15-5last 20
Red Sox on a 3-game streak

Red Sox won 4-3 on May 20, 2026

Where it matters
0Postseason games

No postseason meetings since 2002.

Schedule context
  • Red Sox built the series lead before the 2023 schedule change, taking 82 of 135 decided meetings (61%).
  • Since the schedule balanced out they are 16-6, or 73% to Red Sox.

Red Sox vs Royals same-league record by season

Boston Red Sox and Kansas City Royals met in 24 seasons inside the current feed. Their shared league makes the season table the most useful view.

Active seasons
24
With at least one meeting since 2002
Busiest season
2006
9 meetings
Per active season
6.5
Average recorded meetings
Win Percentage
98W
59W
BOS
KC
62%38%
Boston Red SoxKansas City Royals

Recent Games

Last 10 Games
May 20
KC 3-4 BOS
BOS
May 19
KC 1-7 BOS
BOS
May 18
KC 1-3 BOS
BOS
Aug 6
BOS 3-7 KC
KC
Aug 5
BOS 6-2 KC
BOS
Aug 4
BOS 8-5 KC
BOS
May 11
KC 1-3 BOS
BOS
May 10
KC 1-10 BOS
BOS
May 9
KC 2-1 BOS
KC
Aug 7
KC 8-4 BOS
KC
Last Meeting
May 20, 2026Final
KC
3
HOME
BOS
4
AWAY
Red Soxwon by1run
Red Sox' 3rd straight in this series·Game 157 since 2002
Streaks & Momentum
Current Streak
Boston Red Sox: 3 consecutive wins
3
Avg. Margin of Victory
Games decided by 3.6 runs on average
3.6runs
Momentum (Last 10 vs Archive since 2002)
BOS-Neutral
Last 1070%
Archive since 200262.4%
KC-Neutral
Last 1030%
Archive since 200237.6%
Last 10 Results
BOS / KC

Record since 2002

Season Split & Biggest Wins
Regular season vs Postseason record, plus each team's largest margin of victory
Regular Season157 games
98
59
No postseason meetings appear since 2002.
Boston Red Sox Biggest Win
15–1+14 runs
Jul 1, 2021
Kansas City Royals Biggest Win
13–2+11 runs
Sep 1, 2023
Decade Breakdown
Choose a decade to scope the current-feed page
Season by Season
Season ↓BOS ↕KC ↕Games ↕
2026303
2025426
2024426
2023527
2022347
2021527
2019516
2018516
2017246
2016246
2015437
2014617
2013257
2012437
2011538
2010437
2009538
2008617
2007336
2006459
2005426
2004426
2003516
2002426

All 24 seasons are shown in the table above.

Home / Away Split
53-27BOS HOME32-45KC HOME
AWAY
45-32
BOS
AWAY
27-53
KC

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.

One-run games
27.4%

Share of the 157 decided meetings settled by exactly one run.

Won by 2 or more
72.6%

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

Average total
10runs

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

Home side wins
54.1%

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
7.511245
71.3%
8.59661
61.1%
9.5Closest to even7879
49.7%

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.

Boston Red Sox
98 W · 62.4%1.60
Kansas City Royals
59 W · 37.6%2.66

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 27.4% full archive
-2.4% in the last 20
Won by 2 or more
75%vs 72.6% full archive
+2.4% in the last 20
Average total
8.7 runsvs 10 runs full archive
-1.3 runs in the last 20

Seasons 2023 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 Red Sox and Royals in the oddsmatcher.

Questions about this record: Boston Red Sox vs Kansas City Royals

How do recent Boston Red Sox vs Kansas City Royals results compare with the record since 2002?

Boston Red Sox have won 7 of the latest 10 decided meetings. Boston Red Sox lead the decided record 98-59. The recent window is a subset of the current-feed record since 2002, so the page reports the two 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 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

Boston Red Sox and Kansas City Royals have met 157 times in this archive, which covers the 2002 season onward.