PLAYOFFHOTELS
MLB · JULY 20, 2026 ● LIVE

Athletics at Arizona Diamondbacks

Chase Field · Phoenix, AZ

THE PICK

ATH AthleticsAWAY · 1440 ELO
@
Arizona DiamondbacksHOME · 1505 ELO ARI
37.5% WIN PROBABILITY 62.5%

The model makes Arizona Diamondbacks a 62.5% favorite — home advantage included. One game is one game: a 62.5% edge still loses 37.5 times in 100.

Prediction history

7 UPDATES

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

62.5% Arizona Diamondbacks ▲ +0.5
Ratings shifted on the latest results run.
62.0% Arizona Diamondbacks ▼ -0.5
Ratings shifted on the latest results run.
62.5% Arizona Diamondbacks ▲ +0.5
Ratings shifted on the latest results run.
62.0% Arizona Diamondbacks ▲ +0.5
Ratings shifted on the latest results run.
61.5% Arizona Diamondbacks ▲ +1.0
Ratings shifted on the latest results run.
60.5% Arizona Diamondbacks ▲ +0.1
Ratings shifted on the latest results run.
OPEN
60.4% Arizona Diamondbacks OPENING LINE
First model run when the matchup posted. Elo gap of 65 points at open.

The factors

CONTEXT ONLY

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

GAME-TIME CONDITIONS · RETRACTABLE ROOF · NIGHT GAME

102°F DEW 58°F HUM 24% WIND 11 MPH CLOUD 15% 968 hPa

SCHEDULE & TRAVEL

ATH REST 0D ARI REST 0D ATH TRAVELED 636 MI ATH CROSSED 1 TIME ZONE INTERLEAGUE

The numbers

AWAY

Athletics
ELO RATING1440
RANK#30
RECORD41-55
LAST 101-9
STREAKL9

HOME

Arizona Diamondbacks
ELO RATING1505
RANK#15
RECORD49-47
LAST 106-4
STREAKW4

Ratings come from every MLB result this season — updated daily, weighted by margin of victory, with Arizona Diamondbacks getting the standard home bump. An Elo difference of 65 points plus home advantage at Chase Field produces the 62.5% call. Full methodology →

What could break the pick

Athletics are 1-9 over their last ten. The edge is real but modest; single-game variance eats edges like this regularly. Starting pitchers, lineup cards, and bullpen usage move real outcomes in ways a rating system can’t see.