Selected in the first round (No. 12 overall) of the 2025 MLB Draft by the Texas Rangers out of Great Oak (Calif.) High School... received a $4.8 million signing bonus from the Rangers... appeared in 10 games with Single-A Hickory in 2025, going 9-for-41 with seven RBIs in the Carolina League... Fien was the centerpiece of a group of prospects traded by Texas to Washington on Jan. 22, 2026 when the Rangers acquired MacKenzie Gore from the Nationals... Fien was ranked as the Rangers' No. 2 prospect at the time of the deal... Fien won MVP honors at MLB's High School All-American Game in 2025 and lead the U.S. 18-and-under national team in slugging (.680) that summer, promoting many evaluators to consider him the best bat in the 2025 high school Draft class... his brother, Dylan Fien, was drafted by the Athletics in the seventh round of the 2024 MLB Draft out of the same Temecula, California high school