bayesRatings

Orioles at Red Sox

MLB · Monday, Jul 20 · 6:10 PM CT · Fenway Park · Final BAL 5 – BOS 6

Final Box Score

from the game summary
Team123456789THE
BAL1000121005114
BOS01200111690
Team box
BAL·BOS
11
hits
9
1
home runs
1
2
walks
0
15
strikeouts
9
108
pitches thrown
140
4
errors
0
Top hitters
PlayerTeamH-ABRHRRBI
Christian Encarnacion-StrandBAL2-3112
Willson ContrerasBOS3-4102
Tyler O'NeillBAL2-5102
Caleb DurbinBOS1-4111
Gunnar HendersonBAL3-5100
Jeremiah JacksonBAL1-4001
Pitchers
PitcherTeamIPHERBBK
Shane BazBAL6.06106
Tyler Wells (L)BAL1.11103
Payton TolleBOS5.28419
Garrett Whitlock (W)BOS1.00001
Aroldis Chapman (S)BOS1.01012

For context, not in our forecast.

Game Flow

score margin
BOS +3
BAL +3
123456789
largest lead: BOS 2 · BAL 1lead changes: 3

For context, not in our forecast.

Final · our forecast was BAL 45%, BOS 55% · Updated Jul 20

Expected margin
BOS by 0.8
Expected score
BOS 4.5 – 3.6 BAL
Expected total
8.1
OriolesThe matchupRed Sox
+122Our fair odds−122
3.6Expected runs4.5
−0.03Power rating+0.11
4.6Runs / game4.2
4.7Allowed / game3.8
7.9Hits / game8.2
1.19Home runs / game0.96
3.9Walks drawn / game3.0
49−51Season record50−48
7−3Last 1010−0

Prediction markets

Kalshi · Polymarket US · ProphetX · Novig
BAL chance · BOS chance
Our model fair45.1%54.9%
Kalshi41.7%62.7%
Polymarket USno two-sided price
ProphetXno two-sided price
Novigno two-sided price
Full price table
TeamOur modelfairKalshipre-game · 6:10 PM CTPolymarket US ProphetX Novig 
Moneyline
BALBaltimore Orioles+12245%+14041.7%———
BOSBoston Red Sox−12255%−16862.7%———
SpreadBOS by 0.8
BALBaltimore Orioles+0.8our margin————
BOSBoston Red Sox−0.8our margin————
Totalwe expect 8.1
Over8.1our total————
Under8.1our total————

These are each venue’s last prices before the start (Kalshi’s moneyline: its pre-game close). Odds are the price to buy that side now, taker fee included; the small percent is the implied chance of that same price. Highlighted is the best price in the row among venues on the same line. — means not listed (hover or tap for why). A market price is not the true chance of winning.

Margin range

Boston Red Sox by 0.8 expected
Baltimore Orioles by 13 runs: <1%Baltimore Orioles by 12 runs: <1%Baltimore Orioles by 11 runs: <1%Baltimore Orioles by 10 runs: <1%Baltimore Orioles by 9 runs: <1%Baltimore Orioles by 8 runs: 1%Baltimore Orioles by 7 runs: 1%Baltimore Orioles by 6 runs: 2%Baltimore Orioles by 5 runs: 3%Baltimore Orioles by 4 runs: 4%Baltimore Orioles by 3 runs: 6%Baltimore Orioles by 2 runs: 9%Baltimore Orioles by 1 run: 17%Boston Red Sox by 1 run: 12%Boston Red Sox by 2 runs: 11%Boston Red Sox by 3 runs: 8%Boston Red Sox by 4 runs: 7%Boston Red Sox by 5 runs: 5%Boston Red Sox by 6 runs: 4%Boston Red Sox by 7 runs: 3%Boston Red Sox by 8 runs: 2%Boston Red Sox by 9 runs: 1%Boston Red Sox by 10 runs: 1%Boston Red Sox by 11 runs: 1%Boston Red Sox by 12 runs: <1%Boston Red Sox by 13 runs: <1%
← BAL wins byBOS wins by →
Boston Red Sox wins by 2 or more43%
Boston Red Sox wins by 3 or more32%
Baltimore Orioles wins by 2 or more28%
Decided by one run30%

Centered on the expected margin above; shape from each team's expected runs, with ties after nine settled as one-run games, matched to 14,698 past MLB games.

Total range

8.1 expected
1 runs: 2%2 runs: 2%3 runs: 8%4 runs: 6%5 runs: 12%6 runs: 8%7 runs: 13%8 runs: 8%9 runs: 10%10 runs: 6%11 runs: 7%12 runs: 4%13 runs: 4%14 runs: 2%15 runs: 2%16 runs: 1%17 runs: 1%18 runs: 1%19 runs: 1%20 runs: <1%21 runs: <1%22 runs: <1%
Total runs, both teams
Total over 6.562%
Total over 8.542%
Total over 10.525%
Total from 7 to 1037%

Centered on the expected total above; shape from each team's expected runs, with ties after nine settled as one-run games, matched to 14,698 past MLB games.

Starting Pitchers

from the box score
BALShane Baz SP · last 3 starts: 17.2 IP, 3.57 ERA, 18 Kstarted
BOSPayton Tolle SP · last 3 starts: 12.2 IP, 4.97 ERA, 18 Kstarted

Starting pitchers are part of our forecast.

Rest and Schedule

before this game
BAL·BOS
Jul 19 at HOU
last game
Jul 19 vs TB
0 days
days of rest
0 days
3
games in last 7 days
4
4th straight road game
home / road
5th straight home game

For context, not in our forecast.

Team Comparison

2026 season · box-score averages from 98+ games
BAL·BOS
−0.03
rating (0 = average)
+0.11
4.6
runs / game
4.2
4.7
runs allowed / game
3.8
49−51
season record
50−48
28−25
home record
21−27
21−26
away record
29−21
W7
streak
W13
7−3
last 10
10−0
7.9
hits / game
8.2
1.19
home runs / game
0.96
3.9
walks drawn / game
3.0
9.2
batter strikeouts / game
8.2
7.9
pitcher strikeouts / game
8.5
0.63
errors / game
0.46

Rating Trend

BAL · BOS · 114 days
Baltimore OriolesBoston Red Sox
Rating (0 = average team)

Head to Head

last 10 meetings · BOS 7−3
Jun 4at BOSBAL 8 − 2
Jun 3at BOSBOS 8 − 1
Jun 2at BOSBAL 4 − 2
Apr 26at BALBOS 5 − 3
Apr 25at BALBOS 17 − 1
Apr 24at BALBAL 10 − 3
Aug 28, 2025at BALBOS 3 − 2
Aug 27, 2025at BALBOS 3 − 2
Aug 26, 2025at BALBOS 5 − 0
Aug 25, 2025at BALBOS 4 − 3

BAL · Last 10

7−3 · streak W7
Jul 19at HOU5 − 2W
Jul 18at HOU4 − 2W
Jul 17at HOU3 − 2W
Jul 12vs KC8 − 2W
Jul 11vs KC6 − 1W
Jul 10vs KC5 − 3W
Jul 9vs CHC3 − 2W
Jul 8vs CHC7 − 9L
Jul 7vs CHC2 − 5L
Jul 5at CIN2 − 3L

BOS · Last 10

10−0 · streak W10
Jul 19vs TB6 − 1W
Jul 18vs TB7 − 6W
Jul 17vs TB5 − 3W
Jul 17vs TB10 − 0W
Jul 12at NYM3 − 2W
Jul 11at NYM4 − 0W
Jul 10at NYM6 − 2W
Jul 9at CHW2 − 1W
Jul 8at CHW5 − 0W
Jul 7at CHW8 − 1W