Baltimore Orioles vs Boston Red Sox All-Time Record

AL East rivalry
Baltimore Orioles
Boston Red Sox
Red Sox lead Orioles1,285to1,054·13 tiessince 1901

Retrosheet history through 2025, plus 13 final games from the current feed.

2026 season series: Red Sox lead 9-4

By

Data updated 6 min read

At a glance

All-time since 1901 · current-feed analysis, 2002 to 2026

Baltimore Orioles vs Boston Red Sox insights

Current-feed record
+64wins for Red Sox
57% Red Sox · 43% Orioles

The split has held steady across the schedule change: 28-24 since 2023.

Recent form
7-13last 20
Red Sox on a 4-game streak

Red Sox won 3-1 on Sep 6, 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 221 of 382 decided meetings (58%).
  • Since the schedule balanced out they are 28-24, or 54% to Red Sox.

Orioles vs Red Sox complete all-time series record

Baltimore Orioles and Boston Red Sox have met 2,352 times since 1901, never in the postseason. 1,918 meetings predate the current feed, which adds game-level detail from 2002.

History span
1901 to 2026
First and latest meeting
Before 2002
1,918
Meetings from the Retrosheet game logs
Since 2002
434
Meetings with game-level detail below
Win Percentage
185W
249W
BAL
BOS
43%57%
Baltimore OriolesBoston Red Sox

Recent Games

Last 10 Games
Sep 6
BAL 1-3 BOS
BOS
Sep 5
BAL 0-5 BOS
BOS
Sep 4
BAL 0-1 BOS
BOS
Sep 3
BAL 5-6 BOS
BOS
Jul 22
BOS 6-3 BAL
BOS
Jul 22
BOS 1-5 BAL
BAL
Jul 20
BOS 6-5 BAL
BOS
Jun 4
BOS 2-8 BAL
BAL
Jun 3
BOS 8-1 BAL
BOS
Jun 2
BOS 2-4 BAL
BAL
Last Meeting
Sep 6, 2026Final
BAL
1
HOME
BOS
3
AWAY
Red Soxwon by2runs
Red Sox' 5th straight in this series·Game 434 since 2002
Streaks & Momentum
Current Streak
Boston Red Sox: 4 consecutive wins
4
Avg. Margin of Victory
Games decided by 3.8 runs on average
3.8runs
Momentum (Last 10 vs Archive since 2002)
BAL↓Trending Down
Last 1030%
Archive since 200242.6%
BOS↑Trending Up
Last 1070%
Archive since 200257.4%
Last 10 Results
BAL / BOS

Record since 2002

Season Split & Biggest Wins
Regular season vs Postseason record, plus each team's largest margin of victory
Regular Season434 games
185
249
No postseason meetings appear since 2002.
Baltimore Orioles Biggest Win
16–3+13 runs
Aug 25, 2017
Boston Red Sox Biggest Win
19–3+16 runs
Sep 26, 2018
Decade Breakdown
Choose a decade to scope the current-feed page
Season by Season
Season ↓BAL ↕BOS ↕Games ↕
20264913
20255813
20248513
20237613
202291019
202161319
20205510
201971219
201831619
201710919
201681119
201511819
201411819
201311819
201213518
201181018
20109918
200921618
200861218
200761218
200631518
200581018
200410919
200391019
200261319

All 25 seasons are shown in the table above.

Home / Away Split
86-132BAL HOME117-99BOS HOME
AWAY
99-117
BAL
AWAY
132-86
BOS
Retrosheet archiveComplete through 2025

Baltimore Orioles vs Boston Red Sox all-time record, 1901 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
2,339
Peak inning
5
Record game
33 runs
Two source windows. Current-feed sections: 434 games from 2002 to 2026. History Lab: 2,339 Retrosheet games from 1901 to 2025. The first refreshes with current finals; Retrosheet's published archive currently ends in 2025.

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.

One-run games
23%

Share of the 434 decided meetings settled by exactly one run.

Won by 2 or more
77%

A 2+ run margin crosses 1.5, but this is not a historical line result. Average gap: 3.8.

Average total
9.8runs

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

Home side wins
46.8%

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
7.5283151
65.2%
8.5247187
56.9%
9.5Closest to even200234
46.1%

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
249 W · 57.4%1.74
Baltimore Orioles
185 W · 42.6%2.35

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
35%vs 23% full archive
+12% in the last 20
Won by 2 or more
65%vs 77% full archive
-12% in the last 20
Average total
7.8 runsvs 9.8 runs full archive
-2 runs in the last 20

Seasons 2025 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 Orioles in the oddsmatcher.

Questions about this record: Baltimore Orioles vs Boston Red Sox

How is the Baltimore Orioles vs Boston Red Sox meeting total counted?

The complete series from 1901 through 2026 contains 2,352 recorded meetings. 2,339 meetings have a winner; 13 meetings ended tied and remain separate. This is why the meeting total can exceed the two win totals combined.

How do recent Baltimore Orioles vs Boston Red Sox results compare with the complete record?

Boston Red Sox have won 7 of the latest 10 decided meetings. Boston Red Sox lead the decided record 1285-1054. The recent window is a subset of the complete series from 1901 through 2026, so the page reports the two separately.

When did the Baltimore Orioles and Boston Red Sox first play each other?

The Retrosheet archive's first recorded meeting for this pairing is Jun 2, 1901, when Boston Red Sox won 13-2 away to Baltimore Orioles. The archive covers 2,339 meetings from 1901 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

Baltimore Orioles and Boston Red Sox have met 434 times in this archive, which covers the 2002 season onward.