The 2026 St. Louis Cardinals season, their 145th overall and 21st at Busch Stadium, marked the first full year under President of Baseball Operations Chaim Bloom, who immediately overhauled the roster and extended manager Oli Marmol's contract. Despite gloomy preseason predictions, the team defied expectations by climbing to nine games above .500 by May 19th, fueled by a breakout year from outfielder Jordan Walker (who won the Home Run Derby) and a long-term extension for rookie JJ Wetherholt. The offseason featured major trades, sending Sonny Gray, Wilson Contreras, and Nolan Arenado to the Red Sox and Diamondbacks, while signing pitcher Dustin May to a one-year, $20.5 million deal. May's rebound year prompted a trade-deadline deal for prospects, and the team made history in August when rookie Joshua Báez became the first player ever to homer in his first three MLB at-bats. The season also featured a quirky fan moment, the "Tarps Off" movement, sparked by a Stephen F. Austin State University club baseball team after an extra-inning win on May 15th. Strong performances from Andre Pallante and Alec Burleson further highlighted a season that started one game above .500 in March and remained competitive through the All-Star break.