Riley Chun-Young O’Brien is a Seattle Mariners pitcher. He was a member of the Reds and the Mariners in Major League Baseball. In 2021, he debuted in Major League Baseball (MLB).
How Old Is Riley O’Brien?
Riley O’Brien was born on February 6, 1995,
O’Brien was a baseball player for Shorewood High School in Shoreline, Washington. After graduating in 2013, he went to Everett Community College.
He transferred to the College of Idaho after two seasons at Everett. He finished 6–3 with a 3.23 ERA with sixty strikeouts in 69 innings as a junior in 2016.
In his senior year, he had a 3–4 record with a 2.15 ERA in 67 innings pitched. After the season, he was drafted in the eighth round of the 2017 Major League Baseball draft by the Tampa Bay Rays.
O’Brien joined the Rays and debuted in the Advanced Rookie Appalachian League with the Princeton Rays, going 1–0 with a 2.20 ERA in 11 games (ten starts).
He earned Appalachian League Pitcher of the Week honors twice throughout the season.
In 2018, he started the season with the Bowling Green Hot Rods of the Class A Midwest League (where he was named an All-Star) before being promoted to the Charlotte Stone Crabs of the Class A-Advanced Florida State League, where he finished the season.
He went 8–4 with a 2.75 ERA in 25 games (13 starts) between the two teams. In 2019, he started the season with the Charlotte Knights before being promoted to the Class AA Southern League’s Montgomery Biscuits.