bayesRatings

Red Sox at Tigers

MLB · Tuesday, May 5 · 5:40 PM CT · Comerica Park · Final BOS 10 – DET 3

Final Box Score

from the game summary
Team123456789THE
BOS30520000010120
DET200010000371
Team box
BOS·DET
12
hits
7
3
home runs
1
2
walks
3
11
strikeouts
12
146
pitches thrown
127
0
errors
1
Top hitters
PlayerTeamH-ABRHRRBI
Ceddanne RafaelaBOS3-5214
Wilyer AbreuBOS3-4211
Matt VierlingDET2-4111
Willson ContrerasBOS1-4211
Caleb DurbinBOS2-5101
Andruw MonasterioBOS1-5101
Pitchers
PitcherTeamIPHERBBK
Jovani MoranBOS1.03223
Brayan Bello (W)BOS7.04117
Framber Valdez (L)DET3.09713

For context, not in our forecast.

Game Flow

score margin
DET +8
BOS +8
123456789
largest lead: DET 0 · BOS 8lead changes: 0

For context, not in our forecast.

Final · our forecast was BOS 47%, DET 53% · Updated May 5

Expected margin
Even
Expected score
DET 4.3 – 4.0 BOS
Expected total
8.3
Red SoxThe matchupTigers
+112Our fair odds−112
4.0Expected runs4.3
+0.03Power rating+0.06
3.9Runs / game4.5
4.4Allowed / game4.0
8.0Hits / game8.2
0.69Home runs / game0.97
3.3Walks drawn / game3.8
14−21Season record18−18
5−5Last 104−6

Prediction markets

Kalshi · Polymarket US · ProphetX · Novig
BOS chance · DET chance
Our model fair47.2%52.8%
Kalshi43.7%60.7%
Polymarket USno two-sided price
ProphetXno two-sided price
Novigno two-sided price
Full price table
TeamOur modelfairKalshipre-game · 5:40 PM CTPolymarket US ProphetX Novig 
Moneyline
BOSBoston Red Sox+11247%+12943.7%———
DETDetroit Tigers−11253%−15460.7%———
Spreadabout even
BOSBoston Red Sox+0.3our margin————
DETDetroit Tigers−0.3our margin————
Totalwe expect 8.3
Over8.3our total————
Under8.3our 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

Even game expected
Boston Red Sox by 12 runs: <1%Boston Red Sox by 11 runs: <1%Boston Red Sox by 10 runs: <1%Boston Red Sox by 9 runs: 1%Boston Red Sox by 8 runs: 1%Boston Red Sox by 7 runs: 2%Boston Red Sox by 6 runs: 3%Boston Red Sox by 5 runs: 4%Boston Red Sox by 4 runs: 5%Boston Red Sox by 3 runs: 7%Boston Red Sox by 2 runs: 10%Boston Red Sox by 1 run: 15%Detroit Tigers by 1 run: 15%Detroit Tigers by 2 runs: 10%Detroit Tigers by 3 runs: 8%Detroit Tigers by 4 runs: 6%Detroit Tigers by 5 runs: 4%Detroit Tigers by 6 runs: 3%Detroit Tigers by 7 runs: 2%Detroit Tigers by 8 runs: 2%Detroit Tigers by 9 runs: 1%Detroit Tigers by 10 runs: 1%Detroit Tigers by 11 runs: <1%Detroit Tigers by 12 runs: <1%
← BOS wins byDET wins by →
Detroit Tigers wins by 2 or more38%
Detroit Tigers wins by 3 or more27%
Boston Red Sox wins by 2 or more33%
Decided by one run29%

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

8.3 expected
1 runs: 2%2 runs: 2%3 runs: 7%4 runs: 5%5 runs: 12%6 runs: 8%7 runs: 12%8 runs: 8%9 runs: 10%10 runs: 6%11 runs: 7%12 runs: 4%13 runs: 5%14 runs: 3%15 runs: 3%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 6.564%
Total over 8.544%
Total over 10.527%
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
BOSJovani Moran RP · no recent starts on recordstarted
DETFramber Valdez SP · last 3 starts: 16.1 IP, 2.76 ERA, 19 Kstarted

Starting pitchers are part of our forecast.

Rest and Schedule

before this game
BOS·DET
May 4 at DET
last game
May 4 vs BOS
0 days
days of rest
0 days
6
games in last 7 days
7
2nd straight road game
home / road
5th straight home game

For context, not in our forecast.

Team Comparison

2026 season · box-score averages from 35+ games
BOS·DET
+0.03
rating (0 = average)
+0.06
3.9
runs / game
4.5
4.4
runs allowed / game
4.0
14−21
season record
18−18
6−10
home record
12−4
8−11
away record
6−14
W1
streak
L1
5−5
last 10
4−6
8.0
hits / game
8.2
0.69
home runs / game
0.97
3.3
walks drawn / game
3.8
8.3
batter strikeouts / game
8.3
8.0
pitcher strikeouts / game
8.2
0.51
errors / game
0.53

Rating Trend

BOS · DET · 41 days
Boston Red SoxDetroit Tigers
Rating (0 = average team)

Head to Head

last 10 meetings · DET 5−5
May 4at DETBOS 5 − 4
Apr 20at BOSBOS 8 − 6
Apr 19at BOSDET 6 − 2
Apr 18at BOSDET 4 − 1
Apr 17at BOSBOS 1 − 0
Sep 28, 2025at BOSBOS 4 − 3
Sep 27, 2025at BOSDET 2 − 1
Sep 26, 2025at BOSBOS 4 − 3
May 14, 2025at DETDET 6 − 5
May 13, 2025at DETDET 10 − 9

BOS · Last 10

5−5 · streak W1
May 4at DET5 − 4W
May 3vs HOU1 − 3L
May 2vs HOU3 − 6L
May 1vs HOU3 − 1W
Apr 29at TOR1 − 8L
Apr 28at TOR0 − 3L
Apr 27at TOR5 − 0W
Apr 26at BAL5 − 3W
Apr 25at BAL17 − 1W
Apr 24at BAL3 − 10L

DET · Last 10

4−6 · streak L1
May 4vs BOS4 − 5L
May 3vs TEX7 − 1W
May 2vs TEX5 − 1W
May 1vs TEX4 − 5L
Apr 30at ATL5 − 2W
Apr 29at ATL3 − 4L
Apr 28at ATL2 − 5L
Apr 26at CIN8 − 3W
Apr 25at CIN2 − 9L
Apr 24at CIN8 − 9L