Seth Halvorsen

Seth Halvorsen, born on February 18, 2000, in Chicago, Illinois, is a professional MLB pitcher known for his right-handed batting and throwing capabilities. He made his MLB debut on August 30, 2024, with the Colorado Rockies. Halvorsen attended Heritage Christian Academy in Minnesota before advancing to play college baseball at the University of Tennessee. Drafted by the Rockies in the 7th round as the 8th pick in 2023, Halvorsen's professional career began to gain traction. In the 2025 MLB season, he played a significant role in the Rockies' bullpen. Across 42 games, Halvorsen secured 11 saves and maintained a 4.992 ERA. He pitched for 39.2 innings, achieving 36 strikeouts with a K/9 rate of 8.172 and a WHIP of 1.563. His performance demonstrated a strong ability to handle high-pressure situations, earning him a hold in four games. Halvorsen's pitching style is characterized by his diverse pitch arsenal, including a fastball averaging around 100 mph, a slider, and a splitter. His strategic utilization of these pitches contributes to his effectiveness on the mound. With a notable ability to adapt to different batting hands, he has shown a balanced approach in handling both left and right-handed batters. As Halvorsen continues to develop his career, his contributions to the Rockies are closely watched, marking him as a key player in their pitching lineup.