Washington Nationals vs St. Louis Cardinals Picks and Prediction for Saturday September 19 2026

The Washington Nationals visit the St. Louis Cardinals at Busch Stadium in St. Louis, Missouri, on Saturday, September 19, 2026. First pitch is scheduled for 7:15 PM ET with coverage on MLB.TV. Washington enters at 71-82 overall and 34-41 on the road, while St. Louis is 75-78 overall and 37-41 at home. The Cardinals won two of the first three completed meetings between these teams this season, while Washington comes into this matchup having won four of its last five completed games. St. Louis has dropped two straight. Friday's game had not been completed when this preview was prepared and is not included in the records or recent results. At the time of this writing the odds were not released. Be sure to check out our free MLB picks for more MLB predictions throughout the season.

Starting Pitchers

Washington is scheduled to start Andrew Alvarez, who enters at 2-6 with a 3.35 ERA and 1.27 WHIP through 102.0 innings. Alvarez has allowed 83 hits and only five home runs while recording 99 strikeouts against 47 walks. St. Louis counters with Michael McGreevy, who is 7-9 with a 3.83 ERA and 1.24 WHIP through 160.0 innings. McGreevy has surrendered 154 hits and 20 home runs while striking out 112 and walking 45. Alvarez owns the lower ERA and has been particularly effective at limiting home runs, while McGreevy has the slightly better WHIP and considerably larger workload. On the supplied numbers, Washington appears to have a modest starting-pitching advantage.

Nationals Bring a Dangerous Offense to St. Louis

Washington enters Saturday at 71-82 overall and 34-41 away from home. Despite sitting below .500 for the season, the Nationals have played much better recently, going 4-1 across their last five completed games. Washington swept three games by scores of 4-3, 6-5 and 6-5 before winning 6-3 in its next series. The Nationals finally cooled off with a 3-0 loss on September 16. They have scored 22 runs and allowed 19 over those five games, with four of the five decided by three runs or fewer.

The Nationals have quietly put together some impressive offensive numbers. Washington is batting .247 with 1,289 hits, 778 runs and 200 home runs. The Nationals own a .323 on-base percentage and .426 slugging percentage, giving them significant statistical advantages over St. Louis in both power and overall run production. Pitching has been a much different story, as Washington carries a 4.71 team ERA and 1.39 WHIP while opponents are batting .253. The staff has recorded 1,197 strikeouts against 572 walks.

Washington's clearest strength is an offense that has produced 85 more runs and 42 more home runs than St. Louis this season. That production is particularly important in a matchup where the Nationals also appear to have the stronger starting-pitching numbers. The concern is what happens after the starter leaves, considering Washington's 4.71 team ERA and 1.39 WHIP. Still, the Nationals' combination of recent form, power and run production makes them dangerous against a St. Louis team that has struggled to generate comparable offense.

Cardinals Try to End Their Recent Slide

St. Louis comes into Saturday at 75-78 overall with a 37-41 record at Busch Stadium. The Cardinals are 2-3 across their last five completed games and have lost two straight. They defeated Chicago 3-1 and San Francisco 2-1 during that stretch, but their three losses came by scores of 6-5, 10-3 and 6-5. St. Louis has scored 18 runs and allowed 24 across those five games, with its pitching staff surrendering 16 runs during the current two-game losing streak.

The Cardinals are batting .242 with 1,250 hits, 693 runs and 158 home runs this season. They have posted a .316 on-base percentage and .382 slugging percentage. St. Louis owns a 4.28 team ERA and 1.36 WHIP, with opponents batting .254. The Cardinals have accumulated 1,216 strikeouts while issuing 532 walks. Their pitching numbers are somewhat better than Washington's at the team level, but the difference is not large enough to offset the substantial offensive gap between these clubs.

St. Louis needs its pitching to keep this game within reach. The Cardinals have scored 85 fewer runs than Washington and trail the Nationals by 42 home runs, while their .382 slugging percentage is 44 points lower. The home-field numbers are not especially convincing either, with St. Louis sitting three games below .500 at Busch Stadium. The Cardinals do have a 2-1 advantage through the first three completed meetings of the season series, but Washington's recent performance and offensive profile create a difficult matchup.

Washington Nationals vs St. Louis Cardinals Picks and Prediction

Pick: Washington Nationals Moneyline

Washington is the preferred side in what appears to be a very competitive matchup. The Nationals have won four of their last five completed games, while St. Louis has lost two straight and is only 37-41 at home. Washington also has substantial offensive advantages with 778 runs, 200 home runs and a .426 slugging percentage compared with 693 runs, 158 homers and a .382 slugging percentage for St. Louis. The Nationals' season-long pitching numbers are a concern, but their scheduled starter enters with a 3.35 ERA and has allowed only five home runs through 102 innings. With no confirmed price available, Washington is the moneyline lean provided the eventual number remains reasonable.

Pick: Over 8 or Lower

The Over is the preferred total if the number is 8 or lower. Washington has one of the more offense-heavy statistical profiles in this matchup, scoring 778 runs while carrying a 4.71 team ERA. That combination creates opportunities for runs on both sides. Four of Washington's last five completed games reached at least nine total runs, while three of St. Louis' last five also reached double figures. The scheduled starters could keep the scoring controlled early, but both teams carry WHIPs above 1.35 at the staff level, and Washington's 200-home-run offense supplies significant upside. At 8 or lower, the Over offers the better target.

Final Picks: Washington Nationals Moneyline and Over 8 or Lower

This preview was completed on Friday, September 18, 2026. Starting pitchers, betting lines and other game information are subject to change before the game begins.