Rawcomps

Sonny Siebert

Dossier

Wilfred Charles "Sonny" Siebert (born January 14, 1937, in St. Mary, Missouri) was a right-handed pitcher in Major League Baseball from 1964 to 1975. A University of Missouri alumnus, he was a standout basketball player there and was drafted simultaneously by the Cleveland Indians and the NBA's St. Louis Hawks. He finished his MLB career with a 140–114 record and a 3.21 ERA. On June 10, 1966, he threw a no-hitter against the Washington Senators. Before baseball, he was a first-team All-Big Eight selection and earned a spot on the College World Series All-Tournament Team in 1958.

Bio synthesized · claude-sonnet-xsport-lighter · 2026-06-20

Browse every Sonny Siebert card in the vault →

Sold-comp aggregates for this player are still being collected — this page will grow a full comp profile when they land.