Seth Halvorsen is an American professional baseball pitcher for the Colorado Rockies of Major League Baseball. Drafted by Colorado in the seventh round of the 2023 MLB draft out of the University of Tennessee, he made his MLB debut on August 30, 2024, recording an out on a single pitch against the Baltimore Orioles. Known for a triple-digit fastball, he posted a 1.46 ERA as a late-inning reliever in his first major league season. This tag page collects news, game reports, transaction updates, and analysis covering Halvorsen’s minor league progression, his 2024 debut, his 2025 rookie campaign highlighted by a 103.3 mph fastball, and his 2026 option to Triple-A Albuquerque following a right elbow strain.
