PLAYOFFHOTELS
MLB · JULY 21, 2026 ● LIVE

Baltimore Orioles at Boston Red Sox

Fenway Park · Boston, MA

THE PICK

BAL Baltimore OriolesAWAY · 1500 ELO
@
Boston Red SoxHOME · 1532 ELO BOS
42.4% WIN PROBABILITY 57.6%

The model makes Boston Red Sox a 57.6% favorite — home advantage included. One game is one game: a 57.6% edge still loses 42.4 times in 100.

Prediction history

11 UPDATES

Every time the model moved this pick — logged in full. It updates until 15 minutes before gametime, then locks.

57.6% Boston Red Sox ▲ +1.3
Ratings shifted on the latest results run.
56.3% Boston Red Sox ▼ -0.4
Ratings shifted on the latest results run.
56.7% Boston Red Sox ▼ -0.6
Ratings shifted on the latest results run.
57.3% Boston Red Sox ▲ +0.4
Ratings shifted on the latest results run.
56.9% Boston Red Sox ▼ -0.4
Ratings shifted on the latest results run.
57.3% Boston Red Sox ▼ -0.5
Ratings shifted on the latest results run.
57.8% Boston Red Sox ▲ +0.2
Ratings shifted on the latest results run.
57.6% Boston Red Sox ▲ +0.6
Ratings shifted on the latest results run.
57.0% Boston Red Sox ▼ -1.1
Ratings shifted on the latest results run.
58.1% Boston Red Sox ▲ +0.5
Ratings shifted on the latest results run.
OPEN
57.6% Boston Red Sox OPENING LINE
First model run when the matchup posted. Elo gap of 32 points at open.

The factors

1 IN THE NUMBER

Everything the model sees for this game. Only backtest-validated signals move the probability — the rest is context, shown anyway.

GAME-TIME CONDITIONS · NIGHT GAME

69°F DEW 67°F HUM 93% WIND 6 MPH GUSTS 21 MPH CLOUD 100% RAIN 44% 1008 hPa

SCHEDULE & TRAVEL

BAL REST 0D BOS REST 0D BAL TRAVELED 0 MI DIVISIONAL MATCHUP

IN THE NUMBER

WXRAIN VARIANCE

The numbers

AWAY

Baltimore Orioles
ELO RATING1500
RANK#17
RECORD46-51
LAST 107-3
STREAKW4

HOME

Boston Red Sox
ELO RATING1532
RANK#3
RECORD47-48
LAST 1010-0
STREAKW10

Ratings come from every MLB result this season — updated daily, weighted by margin of victory, with Boston Red Sox getting the standard home bump. An Elo difference of 32 points plus home advantage at Fenway Park produces the 57.6% call. Full methodology →

What could break the pick

Baltimore Orioles come in hot on a 4-game win streak — recent form the season-long rating hasn't fully priced in. This is a coin-flip game — the model calls it a lean, not a lock. Starting pitchers, lineup cards, and bullpen usage move real outcomes in ways a rating system can’t see.