Washington Nationals vs St. Louis Cardinals

Washington gets a slight lean in a close matchup. The Nationals have won four of their past five, including the first two games of this series, while St. Louis is 2-4 over its last six. Washington also owns a stronger 2026 offensive profile against left-handed pitching, with a .774 OPS, a favorable matchup against probable starter Quinn Mathews despite his excellent recent form. Mathews has posted a 1.93 ERA over his last four starts, while Jake Irvin’s recent 3.86 ERA is less dominant, though it is a marked improvement on his 5.51 season ERA. St. Louis’ home-field advantage is limited by its 37-43 home record, so the Nationals’ recent momentum narrowly outweighs the Cardinals’ starting-pitcher edge.