However, the Cardinals went on to only win one more series against the Colorado Rockies, and they were swept twice by the Atlanta Braves and Los Angeles Dodgers.

On April 4, drama ensued as outfielder Tyler O'Neill was thrown out by Ronald Acuña Jr. at home in a 4–1 loss to Atlanta.

After the game, manager Oliver Marmol sharply criticized O'Neill's perceived lack of effort while rounding third base, calling it "unacceptable.

[6] O'Neill criticized Marmol subtlety, telling media that he did not need to take the issue public and it could have been dealt with behind closed doors.

Following the back-to-back series losses to start the month, the Cardinals announced that first-year catcher Willson Contreras would be removed from the catching role and be exclusively used as a designated hitter.

The Cardinals then started a successful run of baseball, where they won a series against the rival Chicago Cubs at Wrigley Field, followed by a three-game sweep of the Boston Red Sox at Fenway Park.

Following the sweep of the Red Sox, the Cardinals announced that Contreras would return to catching duties to start the upcoming home stand.

[13] In June, the Cardinals dropped their first four series, which included falling victim to sweeps by the Pittsburgh Pirates on the road and the San Francisco Giants at home.

[16] The Cardinals also played the Chicago Cubs in the 2023 London Series as the home team, which involved a two-game series split where the Cubs took game one by a score of 9–1 that involved outfielder Ian Happ hitting two home runs off of starter Adam Wainwright,[17] followed by the Cardinals winning game two by a score of 7–5.

Matz then picked up his first win of the season on July 20 against the Chicago Cubs after going 5.0 innings and surrendering one earned run.

Source:[2] The 2023 Major League Baseball (MLB) First-Year Player Draft took place on July 9–11, 2023, in Seattle.