The Arizona Diamondbacks will open a three-game series against the Red Sox on Monday at Fenway Park, and the biggest spotlight falls on rookie left-hander Mitch Bratt. The series matters on both sides: Arizona is trying to keep pace in a tight Wild Card race, while Boston is looking to stop a slide of three straight lost series after going 2-5 on its recent road trip.
Bratt was listed to start the opener against TBD on Monday, August 17. The Diamondbacks then have Merrill Kelly lined up for Tuesday, August 18, against Ranger Suarez, before Brandon Pfaadt takes the ball on Wednesday, August 19, against Payton Tolle. The Wednesday game is scheduled for 4:10 PM ET and will air on NESN.
What the matchup means
For the Diamondbacks, this is another chance to stay in the race after spending the summer in Wild Card contention. That makes every series feel meaningful, especially on the road against a team with its own urgency.
Bratt’s start is notable because it comes in an important spot for a rookie pitcher. The assignment suggests Arizona is willing to lean on him as part of its rotation plan, even with the pressure of a late-season chase building around the club.
Kelly’s return to Arizona has already been one of the more interesting storylines in the series. In 2025, he came back to the Diamondbacks after spending half a season with the Texas Rangers, and his second scheduled start in this set adds another layer to the matchup.
Boston, meanwhile, will try to settle things down at home after a rough stretch. Three straight series losses and a 2-5 trip have put more pressure on the Red Sox to respond quickly, and the schedule now gives them a chance to do it against a playoff-relevant opponent.
Wednesday’s finale should also be worth watching because of the pitching context on both sides. Arizona is listed with Pfaadt against Tolle, and the start time of 4:10 PM ET on NESN gives the series a late-afternoon finish in Boston.
One other note for the Diamondbacks: Jake Bennett is expected to get extra rest because of a bullpen start Monday and an off day on Thursday. That kind of scheduling detail matters when a team is trying to balance health, workload, and the push for the postseason.
