St. Louis Cardinals vs Kansas City Royals Picks and Prediction for Sunday June 21 2026
Use Code SSWC The St. Louis Cardinals and Kansas City Royals continue their weekend series on Sunday, June 21, 2026, at Kauffman Stadium in Kansas City, Missouri. First pitch is scheduled for 2:10 PM ET with coverage available on MLB.TV. St. Louis enters the contest with a 40-34 record, while Kansas City comes in at 32-45. Despite the difference in overall records, ESPN Analytics gives the Royals a 56.0% chance to win compared to 44.0% for the Cardinals. At the time of this writing the odds were not released. Be sure to check out our free MLB picks at free MLB Picks.
Starting Pitchers for Sunday's Showdown
St. Louis is expected to hand the ball to Dustin May. The right-hander enters with a 5-6 record, a 3.75 ERA, and a 1.14 WHIP across 81.2 innings. He has allowed 72 hits while striking out 75 batters and walking 21. Kansas City is scheduled to counter with Stephen Kolek, who has been effective this season with a 4-1 record, a 2.68 ERA, and a 1.03 WHIP in 50.1 innings. Kolek has surrendered 42 hits while striking out 34 batters and issuing just 10 walks.
St. Louis Searches for Answers After Recent Struggles
The Cardinals enter Sunday's matchup with a strong 40-34 overall record and a respectable 19-17 mark on the road. However, recent results have been challenging. St. Louis has lost three consecutive games and is 2-3 over its last five contests. The Cardinals recently dropped back-to-back games against Kansas City by scores of 6-5 and 14-6. Prior to those defeats, St. Louis lost 6-1 to San Diego before earning victories by scores of 3-2 and 3-0.
Offensively, the Cardinals have produced a .247 batting average while scoring 337 runs and collecting 616 hits. St. Louis has hit 83 home runs and carries a .325 on-base percentage with a .396 slugging percentage. The pitching staff owns a 4.22 ERA and a 1.34 WHIP while allowing opponents to hit .255. Cardinals pitchers have recorded 566 strikeouts and issued 244 walks.
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One area that stands out for St. Louis is its ability to generate power relative to Kansas City. The Cardinals have hit more home runs and scored more runs than the Royals this season. Those advantages have helped the club maintain a winning record despite recent struggles.
Kansas City Looks to Keep Momentum Rolling
The Royals come into this game with a 32-45 overall record and a 19-21 mark at home. While the season record remains below .500, Kansas City has shown signs of improvement lately. The Royals have won three of their last five games, including consecutive victories over St. Louis by scores of 14-6 and 6-5. Kansas City also earned a 6-2 win against Washington during this stretch.
Kansas City's offensive numbers are remarkably similar to those of St. Louis. The Royals own a .247 batting average with 321 runs scored, 637 hits, and 73 home runs. They have posted a .320 on-base percentage and a .392 slugging percentage. On the mound, Kansas City carries a 4.48 ERA and a 1.38 WHIP while holding opponents to a .252 batting average. The pitching staff has accumulated 598 strikeouts and 292 walks.
The most notable strength for Kansas City entering this game is recent offensive production. The Royals have scored 20 runs in their last two victories over St. Louis, showing an ability to capitalize on opportunities and generate consistent offense during this series.
St. Louis Cardinals vs Kansas City Royals Picks and Prediction
St. Louis Cardinals vs Kansas City Royals Pick
- Pick: Royals Moneyline
Kansas City enters this game with momentum after winning the first two games of the series. The Royals also have the advantage in the projected starting pitching matchup based on the season numbers provided. While St. Louis owns the better overall record, Kansas City has been the hotter team in this series and appears capable of completing the sweep.
St. Louis Cardinals vs Kansas City Royals Total Pick
- Pick: Over 8.5
I like the over in this matchup. The first two games of the series have produced 31 combined runs, and both teams have comparable offensive numbers entering Sunday. With recent meetings trending toward higher scoring results, another game with plenty of offense is the preferred play.
Final Score Prediction: Royals 5 – Cardinals 4
This prediction was written before the completion of game play on Saturday.
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