Arizona Diamondbacks at Philadelphia Phillies: Final Score & Recap

The Arizona Diamondbacks defeated the Philadelphia Phillies 5-1 at Citizens Bank Park on October 23, 2023, completing a dominant road performance that erased the DiamondIQ model's pre-game estimate of a 54 percent home win probability for Philadelphia and drove it to zero by the final out. Arizona scored in three separate innings, with the decisive damage coming in the second, and the Phillies never found a path back into the game.

The pivotal sequence began in the top of the second inning, where the D-backs hung three runs on Aaron Nola. The biggest individual swing of the frame came from Tommy Pham's home run off Nola, which added 4.9 percent in win probability from Arizona's perspective. Philadelphia's best opportunity to respond came and went in the bottom half when Trea Turner struck out against Merrill Kelly, a moment that swung 9.8 percent in win probability against the Phillies and effectively stalled their early momentum. Ketel Marte then extended the lead with a fifth-inning triple off Nola — the single largest win-probability swing of the game at plus 12.7 percent — before adding a single off Orion Kerkering in the seventh for another 4.8 percent move.

Marte was the clear standout offensive performer, finishing with a cumulative WPA of plus 22.8 percent and an RE24 of plus 1.2, while Brandon Marsh contributed a plus 8.4 percent WPA in a supporting role. On the mound, Merrill Kelly was equally dominant, generating plus 22.1 percent in win probability over his outing and providing the backbone of a staff that also received contributions from Michael Lorenzen at plus 9.3 percent and Ryan Thompson at plus 5.5 percent. The Phillies committed one error and managed only six hits against an Arizona pitching staff that gave them virtually nothing to work with across nine innings.