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Red Sox vs Diamondbacks Prediction 8/17/26 MLB Picks Today

Arizona Diamondbacks (66-59) vs. Boston Red Sox (66-58)
August 17, 2026 7:10 pm EDT
The Line: Boston Red Sox -157 / Arizona Diamondbacks 130; Over/Under: 9
(Get latest betting odds)

In this article we will formulate a Red Sox vs Diamondbacks prediction for this MLB game on Monday, August 17th at Fenway Park in Boston, Massachusetts. Let’s take a look at the prediction for this MLB matchup. 

Boston Red Sox Betting Preview

The Boston Red Sox are 66-58 this year after they lost two out of three against the Pirates by scores of 4-8, 4-0, and 3-8. In game three, Boston cut the deficit to 7-3 in the fifth inning, but couldn’t get any closer in the loss. The Red Sox recorded five hits and they committed one error in the game, while they were led by Wong, who went 2-3 with one home run and three RBIs. Sandoval allowed nine hits and seven earned runs over 4.0 innings for the loss, while Burgos allowed one earned run in relief. Prior to that series, Boston lost three out of four against the Blue Jays and two out of three against the Athletics. 


This season, Boston has a 3.52 ERA with a 1.22 WHIP and a .240 opponent batting average, while they have scored 549 runs with a .248 batting average and a .320 on base percentage. Willson Contreras has led the Red Sox with 24 home runs and 72 RBIs, while Jarren Duran has added 16 home runs and 61 RBIs. The projected starting pitcher for Boston is Alec Gamboa, who is 0-0 with a 1.59 ERA and a 1.12 WHIP over 17.0 innings pitched this year. 

Arizona Diamondbacks Betting Preview

The Arizona Diamondbacks are 66-59 this season after they won two out of three against the Braves by scores of 2-0, 10-3, and 3-5. In game three, Arizona tied the game at two in the seventh inning, but they allowed three runs in the bottom of the seventh for the loss. The Diamondbacks recorded six hits in the game and they were led by Moreno, who went 1-4 with one home run and one RBI. Soroka allowed six hits and two earned runs over 5.2 innings, while Clarke picked up the loss in relief. Prior to that series, Arizona lost two out of three against the Rockies, but did win two out of three against the Dodgers before that. 

This season, Arizona has a 4.09 ERA with a 1.27 WHIP and a .250 opponent batting average, while they have scored 567 runs with a .244 batting average and a .316 on base percentage. Ketel Marte has led the Diamondbacks with 21 home runs and 67 RBIs, while Corbin Carroll has added 18 home runs and 57 RBIs. The projected starting pitcher for Arizona is Mitch Bratt, who is 1-1 with a 3.74 ERA and a 1.40 WHIP over 33.2 innings pitched this season. 

Why the Boston Red Sox will win

  • The Red Sox have won each of their last 14 night games against teams that held a winning record.
  • The Diamondbacks have lost each of their last five road games against American League opponents following a loss.
  • The Red Sox have covered the run line in eight of their last nine games against NL West opponents that held a winning record.
  • The Diamondbacks have failed to cover the run line in each of their last four games against AL East opponents.
  • The Diamondbacks have trailed after 3 innings in 10 of their last 11 games as underdogs against American League opponents.
  • The Diamondbacks have trailed after 5 innings in 10 of their last 11 road games against American League opponents.
  • The Red Sox have won the first inning in four of their last five games against opponents that held a winning record.

Why the Arizona Diamondbacks will win

  • The underdogs have won each of the last six games between the Diamondbacks and Red Sox.
  • The Red Sox have lost four of their last five games as favorites against NL West opponents.
  • The Diamondbacks have covered the run line in each of their last seven games as underdogs following a loss.
  • The Red Sox have failed to cover the run line in seven of their last eight games as favorites against the Diamondbacks following a loss.
  • The Diamondbacks have led after 3 innings in each of their last four night games.
  • The Diamondbacks have led after 5 innings in each of their last four night games.
  • The Diamondbacks have won the first inning in three of their last four night games.

Total Runs Facts

  • Eight of the Diamondbacks’ last nine games as underdogs against American League opponents have gone UNDER the total runs line.
  • Five of the Red Sox’s last six home games against NL West opponents have gone UNDER the total runs line.
  • There has been no run scored during the first inning in each of the Red Sox’s last seven night games.
  • There has been at least one run scored in the first inning in each of the Diamondbacks’ last five games against AL East opponents.

Boston Red Sox Player Prop Facts

  • Ceddanne Rafaela has hit at least one home run in each of the Red Sox’s last three games against NL West opponents.
  • Ceddanne Rafaela has recorded at least one hit in each of the Red Sox’s last 12 night games against NL opponents that held a winning record.
  • Willson Contreras ranks 4th amongst qualified players for On Base Percentage (.389) this season.

Arizona Diamondbacks Player Prop Facts

  • Mitch Bratt has recorded four or more strikeouts in three of his last four appearances in night games.
  • Gabriel Moreno has recorded at least one hit in each of the Diamondbacks’ last 10 games.
  • Nolan Arenado has hit a home run in three of his last four appearances at Fenway Park against opponents that held a winning record.
  • Gabriel Moreno ranks 4th amongst qualified players for Batting Average (.308) this season.

Matchup/League Facts

  • The Red Sox rank T1st in the league for doubles this season (224).
  • The Red Sox rank 2nd in the league for home runs allowed this season (119).
  • The Diamondbacks rank 1st in the league for triples this season (33).
  • The Diamondbacks rank 2nd in the league for strikeouts against this season (912).

Red Sox vs Diamondbacks Prediction 

Boston comes into this matchup after alternating wins and losses over their last five games and they have allowed 6+ runs in three of their last five. The Red Sox are 29-31 at home this year, while the Diamondbacks are 30-32 on the road. Arizona has lost three of their last five games, but they have allowed three or fewer in three of those five. The Diamondbacks are starting Bratt, who has allowed two earned runs or fewer in four of his last five starts, while Gamboa will open for a few innings. Take the Diamondbacks and the plus money here. 

David Racey's Free Pick: Diamondbacks ML

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David Racey

David started writing about sports in 2015, but sports has been his passion for as long as he can remember. David spends most of his free time watching pretty much anything sports related from Baseball to Tennis and everything in between. David likes to analyze statistics and recent results to form an unbiased opinion on whatever game he is breaking down. Follow David on Twitter at @itsyerboi41

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