The Washington Nationals defeated the St. Louis Cardinals 9-6 at Nationals Park on April 6, 2026, in a game that remained competitive deep into the evening before an explosive eighth inning settled matters decisively. The DiamondIQ model entered the contest giving Washington a 54 percent chance of winning at home, a figure that climbed steadily before reaching 100 percent by the final out. The Cardinals drew first blood with a solo home run from Ramón Urías off Ken Waldichuk in the sixth inning, a swing worth plus 24.1 percent in win probability that gave St. Louis early momentum. Washington answered with a run in the bottom half, and the Cardinals pushed the lead to two with Jordan Walker connecting off Waldichuk again in the top of the eighth, a blast that added another 18.7 percent to St. Louis's win probability and appeared to put the game in hand.
What followed in the bottom of the eighth was the decisive sequence of the game. Washington sent six runs across the plate in that frame, erasing a 6-3 deficit and turning a Cardinals lead into a comfortable Nationals victory. James Wood delivered the critical blow, a home run off Ryne Stanek that swung win probability by plus 46.4 percent and represented the single largest play of the contest by that measure. Brady House followed with another home run, this one off Matt Svanson, adding a further 27.1 percent swing that effectively closed the door on any St. Louis comeback. Washington's pitching staff held the Cardinals scoreless through the final frame to preserve the margin.
By WPA, Wood finished as the game's top performer at plus 47.0 percent with a RE24 of plus 3.0, while Urías led all Cardinals batters at plus 38.8 percent despite being on the losing side, reflecting how meaningful his early contributions were before the eighth-inning collapse. Brady House posted plus 37.0 percent and a RE24 of plus 2.1 among the Nationals' standouts. On the mound, Zack Littell led Washington's pitchers with plus 13.3 percent WPA, followed by JoJo Romero at plus 8.1 percent, whose seventh-inning double play induced from CJ Abrams, a minus 19.4 percent swing against the Nationals, proved to be a pivotal momentum check that kept Washington within striking distance heading into the decisive eighth.
Analysis generated by DiamondIQ's model.