Red Sox vs Diamondbacks Prediction 19 August 2026
📡 Boston have dominated the opening two games, winning 11-1 and 9-4. The Red Sox have already racked up 20 runs in the series, so Game 3 deserves a fresh look rather than simply following the previous script. This time, the starting pitching matchup promises to be much tighter: Arizona are sending Brandon Pfaadt to the mound, while Boston counter with Peyton Tolle.
Head-to-Head
📊 Despite Boston’s two emphatic wins, Arizona still hold a 6-4 edge over the last ten meetings. Previous years have seen a wide variety of scenarios in this matchup, so the head-to-head record alone doesn’t guarantee a continuation of the current high-scoring trend. Instead, the quality of the starting pitchers for Game 3 looks set to play a more decisive role.
Head-to-head statistics Red Sox - Diamondbacks

Boston Red Sox Team Overview
The Red Sox are making the most of their opportunities right now, racking up 16 hits in the opener and adding nine more runs in Game 2. On Tuesday, Adley Rutschman and Mickey Gasper both went deep. Boston’s offensive firepower remains the biggest threat to any low-scoring scenario, but after two explosive nights at the plate, the Red Sox are set to face a significantly tougher starting pitcher for the first time in this series.
Match Results: Boston Red Sox

Arizona Diamondbacks Team Overview
Arizona have managed just five runs across two games. Adding to their troubles, Ketel Marte missed his second straight outing due to a knee issue and is now set for further evaluation. Without one of their key hitters, the visitors’ lineup lacks depth, putting extra pressure on a limited group in the heart of the order.
Match Results: Arizona Diamondbacks
⚾ Starting Pitchers
Brandon Pfaadt enters the game with a 3.11 ERA and a 3.80 FIP. Over 92.2 innings, he has issued just 24 walks, rarely gifting opponents free bases. Against Boston’s red-hot offense, his command will be his biggest asset.
Peyton Tolle boasts a 2.97 ERA and a 3.21 FIP. In his previous outing, the lefty tossed eight scoreless innings, and in the start before that, he racked up 14 strikeouts. His current form stands in stark contrast to the quality of pitching Arizona faced in the first two games of the series.
⭐Editor's Pick
After seeing scorelines of 11-1 and 9-4, betting against a high-scoring game looks risky-especially considering Boston’s current form. However, Game 3 presents an entirely different pitching matchup. Pfaadt rarely allows free passes, while Tolle comes in off eight scoreless innings and has the tools to seriously limit an Arizona lineup missing Marte. For the hosts to push the total over, they’ll once again need to do most of the heavy lifting themselves. With these two pitchers on the mound, the odds of a more subdued contest increase significantly after back-to-back slugfests. Our pick: under 9 total runs.