St. Louis Cardinals vs Arizona Diamondbacks – MLB Prediction – June 25, 2026

St. Louis Cardinals vs Arizona Diamondbacks : a finale that could catch fire

The final game of this series brings together two teams that have both had their moment. St. Louis opened with a narrow win before Arizona flipped the script with back-to-back victories. The Diamondbacks have found their bats at just the right time, while the Cardinals now have to avoid a third straight defeat in front of their own crowd.

The Cardinals want to finish the series on a better note

St. Louis have still been strong at home despite the last two defeats in this series. The Cardinals have a lineup that can put runs on the board in a hurry, led by Jordan Walker, JJ Wetherholt and several hitters who can drag innings out.

The big job is getting more stability on the mound after coughing up nine runs last time out. Michael McGreevy offers a calming presence. For all his losing record, the St. Louis right-hander has put together a solid season, limits hard contact and usually gives his side a chance to stay in touch through the later innings against Arizona.

Arizona have rediscovered their offence

The Arizona Diamondbacks head into this one on a two-game winning run and with fresh confidence at the plate. After a few tougher outings, the offence has started to flow again, stringing together hits and getting the whole lineup involved.

Corbin Carroll and Ketel Marte remain the main threats, but Arizona also have to live with Zac Gallen’s current struggles. The right-hander has been all over the place for weeks, mixing the odd sharp spell with some ugly innings. Against a St. Louis team that usually hits better at home, any mistake could be punished quickly.

MLB Prediction: St. Louis Cardinals vs Arizona Diamondbacks

Over 7.5 runs

This matchup points towards more scoring chances than the line suggests. Arizona are coming off a nine-run haul in their last game and arrive with confidence at the plate, while the Cardinals have enough in the tank to take advantage of Zac Gallen’s problems, with the right-hander carrying an ERA above six this season.

Michael McGreevy can keep St. Louis in it, but he’ll be up against a lineup that has just found its rhythm again. At the other end, the Cardinals have shown plenty of times that they can put together a few productive innings at home when the opposing starter starts leaving runners on base.

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