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Giants vs Diamondbacks Prediction 8/27/26 MLB Picks Today

Arizona Diamondbacks (71-63) vs. San Francisco Giants (54-79)
August 27, 2026 9:45 pm EDT
The Line: San Francisco Giants -106 / Arizona Diamondbacks -114; Over/Under: 8
(Get latest betting odds)

The Arizona Diamondbacks and San Francisco Giants meet Thursday in MLB action at Oracle Park. Here’s a Giants vs Diamondbacks Prediction. This article will include a Giants vs Diamondbacks Pick.

Arizona Diamondbacks Betting Preview

The Arizona Diamondbacks are 71-63 on the year and play the Phillies and Astros next. The Arizona Diamondbacks are batting .244 on the season and have a .317 OBP and a .398 slugging percentage. The Arizona Diamondbacks’ pitching staff has a 4.17 ERA and a 1.29 WHIP. Corbin Carroll leads the Arizona Diamondbacks with 121 hits and 58 RBI, while Ketel Marte and Geraldo Perdomo have combined for 234 hits and 113 RBI.

Jose Cabrera gets the ball for the Arizona Diamondbacks, and he is 0-2 with a 5.60 ERA and 12 strikeouts this season. This will be Cabrera’s first career game against the San Francisco Giants.

San Francisco Giants Betting Preview

The San Francisco Giants are 54-79 on the year and play the Braves and Pirates next. The San Francisco Giants are batting .248 on the season, have a .307 OBP, and have a .407 slugging percentage. The San Francisco Giants’ pitching staff has a 4.33 ERA and a 1.36 WHIP. Jung Hoo Lee leads the San Francisco Giants with 133 hits and 47 RBI, while Rafael Devers and Willy Adames have combined for 230 hits and 127 RBI.

Landen Roupp gets the ball for the San Francisco Giants, and he is 7-13 with a 4.34 ERA and 130 strikeouts this season. Roupp is 0-2 with a 5.40 ERA and 24 strikeouts in his career against the Arizona Diamondbacks.

Why the San Francisco Giants will win

  • The Diamondbacks have lost eight of their last nine night games following a home win.
  • The Giants have won seven of their last eight home games against NL opponents following a loss.
  • The Giants have covered the run line in 11 of their last 12 games as home underdogs against the Diamondbacks.
  • The Diamondbacks have failed to cover the run line in eight of their last nine games as road favorites following a win.
  • The Giants have won the first inning in four of their last five games.
  • The Giants have led after 5 innings in eight of their last nine home games.
  • The Diamondbacks have trailed after 3 innings in each of their last four road games.

Why the Arizona Diamondbacks will win

  • The Diamondbacks have won eight of their last nine games against the Giants.
  • The Giants have lost eight of their last nine games against teams that held a winning record.
  • The Diamondbacks have covered the run line in each of their last four road games against NL West opponents.
  • The Giants have failed to cover the run line in four of their last five home games against NL West opponents that held a winning record.
  • The Diamondbacks have won the first inning in each of their last four games against NL West opponents.
  • The Diamondbacks have led after 5 innings in four of their last five road games against NL opponents.
  • The Diamondbacks have led after 3 innings in six of their last seven games at Oracle Park against opponents that held a losing record.

Total Runs Facts

  • Five of the Diamondbacks’ last six games as road favorites have gone UNDER the total runs line.
  • Five of the Giants’ last six night games against NL opponents have gone UNDER the total runs line.
  • There has been no run scored during the first inning in eight of Landen Roupp’s last nine home appearances as a starter.
  • There has been no run scored during the first inning in each of the Diamondbacks’ last four games.

San Francisco Giants Player Prop Facts

  • Landen Roupp has recorded six or more strikeouts in each of his last four appearances against NL West opponents that held a winning record.
  • Rafael Devers has hit a home run in each of the Giants’ last four home games.
  • Drew Gilbert has recorded at least one hit in each of his last 10 home appearances against NL opponents.

Arizona Diamondbacks Player Prop Facts

  • Gabriel Moreno has recorded at least one hit in each of his last 12 road appearances against NL West opponents.
  • Corbin Carroll has hit a home run in each of the Diamondbacks’ last two games against NL West opponents.

Matchup/League Facts

  • The Giants rank 30th in the league for walks this season (352).
  • The Giants rank 1st in the league for home runs allowed this season (123).
  • The Diamondbacks rank 1st in the league for triples this season (35).
  • The Diamondbacks rank 2nd in the league for strikeouts against this season (969).

Giants vs Diamondbacks Prediction

I’m not excited to back Cabrera and his small sample size in which he’s struggled as a rookie, but Roupp hasn’t been much better through 134.2 innings. Roupp has a 4.34 ERA and 1.31 WHIP on the season, and he’s allowed 13 earned runs in his last 21 innings. The Giants are also 2-17 in the last 19 games Roupp has pitched. The Diamondbacks are in the thick of the playoff race, and matchups like this are a gift they can’t afford to blow. Soft price; I’ll gladly side with the Diamondbacks.

Randy Chambers's Free Pick: Arizona Diamondbacks -114

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Randy Chambers

Randy has covered sports betting since 2014 and writes about everything from NFL to WNBA. Follow Randy Chambers on Twitter.

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