Selected in the first round (No. 4 overall) of the 2025 MLB Draft by the Colorado Rockies out of Stillwater High School in Stillwater, Oklahoma... son of former Major Leaguer Matt Holliday and brother of Orioles first-round pick Jackson Holliday... signed with the Rockies on July 23, 2025 and received a $9 million signing bonus, a record for a high school player... was voted Gatorade's Oklahoma Player of the Year in 2025... his brother, Jackson Holliday, was the No. 1 overall pick in the 2022 MLB Draft and made his Major League debut with the Baltimore Orioles in April 2024... was ranked as the No. 1 prospect in the 2025 MLB Draft class by MLB.com... by August 2025, he was ranked by MLB as the No. 17 prospect in baseball, the top prospect in the Rockies' system and No. 9 shortstop prospect in baseball... Holliday made his Minor League debut on Aug. 12, 2025 with Fresno, going 2-for-4 with a double vs Stockton
Ethan's father, Matt Holliday, also attended Stillwater High School and was also named the state's Gatorade Player of the Year... won a World Series with the St. Louis Cardinals in 2011, was named the NLCS MVP in 2007 with Colorado and led the National League in batting and RBIs in 2007... Holliday was an All-Star from 2006-08, 2010-12 and again in 2015... played for the Rockies, Athletics, Cardinals and Yankees before returning to Colorado in 2018 for his final season... finished his Major League career as a .299 hitter with 2,096 hits, 316 home runs and 1,220 RBIs... won four Silver Slugger Awards and was inducted into the St. Louis Cardinals' Hall of Fame... Ethan's grandfather, Tom Holliday, has worked as a pitching coach for Auburn and as the head coach at OSU... Dave Holliday, Matt's uncle, served as a scout for the Atlanta Braves... Matt's cousin Heath Holliday also played baseball for OSU... his uncle, Josh Holliday, was drafted by the Toronto Blue Jays in 1999 and appeared in 145 Minor League games from 1999-2000