Marlins Call Up Pitcher to Make MLB Debut

Ralston’s journey to the majors has been a long one. A former seventh-round draft pick out of UCLA, he spent seven seasons working through the minor leagues before earning his first call-up opportunity.

The Marlins have been searching for reliable bullpen depth throughout August, and Ralston’s recent performance with Triple-A Jacksonville helped force the issue. His ability to generate strikeouts with a high-spin fastball and sweeping slider made him an appealing option for a bullpen that continues to shuffle pieces late in the season.

Sunday’s timing is especially important because Miami is looking to finish its series against Washington on a positive note while remaining within reach of the National League Wild Card picture.

Ralston’s arrival also provides insurance behind starter Janson Junk, who is not expected to work deep into the game. The fresh arm could be asked to cover multiple innings if needed.

Meanwhile, King’s designation ends his latest stint with the organization and opens additional flexibility on the 40-man roster heading toward September roster expansion.

For the Marlins, the transaction is about more than roster management. It’s an opportunity to evaluate another homegrown arm while giving Ralston the chance to complete a journey that began years ago in the minor leagues.