Former Peoria Chiefs infielder Paul DeJong, who made his major-league debut last year, signed a six-year, $26 million contract extension with the St. Louis Cardinals on Monday.

That is the largest contract extension ever for a player with less than one year of MLB service, surpassing the six-year, $25 million deal shortstop Tim Anderson signed with the Chicago White Sox last year. DeJong’s extension includes team options for the 2024 and 2025 seasons, which can make the deal worth up to $51.5 million over eight years.

DeJong is expected to be the Cardinals’ everyday shortstop this year. He played shortstop and second base for St. Louis last season, and batted .285 with 25 HR and 65 RBI in 108 big-league games. He also played 48 games in Triple-A last year, batting .299 with 13 HR and 34 RBI in 48 games with the Memphis Redbirds.

DeJong played for the Peoria Chiefs in 2015, batting .288 with 5 HR, 26 RBI and 13 SB in 56 games. He exclusively played third base on defense that year.