Red Sox vs Diamondbacks Prediction 8/19/26 MLB Picks Today
Arizona Diamondbacks (66-61) vs. Boston Red Sox (68-58)
August 19, 2026 4:10 pm EDT
The Line: Boston Red Sox -149 / Arizona Diamondbacks 123; Over/Under: 8.5
(Get latest betting odds)
In this article we will formulate a Red Sox vs Diamondbacks prediction for this MLB game on Wednesday, August 19th 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 68-58 this year after they won the first two games by scores of 11-1 and 9-4. In game two, Boston blew a 3-0 lead in the third inning, but they scored the last six runs to get the win. The Red Sox recorded 13 hits and they committed one error in the game, while they were led by Rutschman, who went 2-4 with one home run and three RBIs. Suarez allowed four hits and four earned runs over 5.1 innings for the win, while Guerrero picked up the hold. Prior to this series, Boston lost two out of three against the Pirates and three out of four against the Blue Jays.
This season, Boston has a 3.51 ERA with a 1.22 WHIP and a .239 opponent batting average, while they have scored 569 runs with a .250 batting average and a .323 on base percentage. Willson Contreras has led the Red Sox with 25 home runs and 74 RBIs, while Jarren Duran has added 16 home runs and 61 RBIs. The projected starting pitcher for Boston is Payton Tolle, who is 8-6 with a 2.97 ERA and a 1.06 WHIP over 115.0 innings pitched this year.
Arizona Diamondbacks Betting Preview
The Arizona Diamondbacks are 66-61 this season after they lost game two by a score of 4-9 on Tuesday. Arizona scored four runs in the third inning, but went scoreless over the last six innings for the loss. The Diamondbacks recorded seven hits and they committed one error in the game, while they were led by Moreno, who went 1-3 with one home run and four RBIs. Kelly allowed seven hits and six earned runs over 4.0 innings for the loss, while Ginkel allowed two earned runs in relief. Prior to this series, Arizona won two out of three against the Braves, but lost two out of three against the Rockies before that.
This season, Arizona has a 4.17 ERA with a 1.29 WHIP and a .252 opponent batting average, while they have scored 572 runs with a .243 batting average and a .315 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 Brandon Pfaadt, who is 7-1 with a 3.11 ERA and a 1.13 WHIP over 92.2 innings pitched this season.
Why the Boston Red Sox will win
- The Red Sox have won each of their last 15 games against teams that held a winning record.
- The Diamondbacks have lost each of their last seven road games against American League opponents following a loss.
- The Diamondbacks have failed to cover the run line in each of their last six games against AL East opponents.
- The Red Sox have covered the run line each of their last six games against NL West opponents that held a winning record.
- The Diamondbacks have trailed after 5 innings in each of their last seven games as underdogs against AL East opponents.
- The Diamondbacks have lost the first inning in four of their last five games against American League opponents that held a winning record.
- The Diamondbacks have trailed after 3 innings in 12 of their last 13 games as underdogs against American League opponents.
Why the Arizona Diamondbacks will win
- The Diamondbacks have won eight of their last nine Wednesday games as road underdogs.
- The Red Sox have lost three of their last four games as favorites following a win.
- The Red Sox have failed to cover the run line in four of their last five games as favorites against National League opponents following a win.
- The Diamondbacks have covered the run line in each of their last three day games against the Red Sox following a loss.
- The Diamondbacks have led after 5 innings in three of their last four day games against the Red Sox.
Total Runs Facts
- Five of the last six games between the Diamondbacks and Red Sox have gone OVER the total runs line.
- Four of the Diamondbacks’ last five games as underdogs against the Red Sox have gone OVER the total runs line.
- There has been at least one run scored in the first inning in 11 of Brandon Pfaadt’s last 12 road appearances as a starter.
- There has been at least one run scored in the first inning in each of the Red Sox’s last five day games.
Boston Red Sox Player Prop Facts
- Mickey Gasper has hit a home run in each of his last three appearances against the Diamondbacks.
- Payton Tolle has recorded six or more strikeouts in six of his last seven appearances.
- Jarren Duran has recorded at least one hit in each of his last 10 home appearances against NL West opponents.
- Payton Tolle has recorded a win in each of his last three appearances with the Red Sox as favorites.
Arizona Diamondbacks Player Prop Facts
- Nolan Arenado has hit a home run in three of his last four appearances at Fenway Park against opponents that held a winning record.
- Brandon Pfaadt has recorded five or more strikeouts in each of his last four appearances in day games against AL teams that held a winning record.
- Gabriel Moreno has recorded at least one hit in each of the Diamondbacks’ last 12 games.
- Brandon Pfaadt has recorded a win in four of his last five road appearances.
Red Sox vs Diamondbacks Prediction
Arizona comes into this matchup on a three game losing streak and they have allowed 25 runs during that span. The Diamondbacks are 30-34 on the road this year, while the Red Sox are 31-31 at home. Boston has won three of their last four games and they have scored 31 runs in their last five. The Red Sox are starting Tolle, who has allowed two earned runs or fewer in four straight starts, while Pfaadt has allowed zero earned runs in his last 27.2 innings. Take the under here.