"Rooney is on the mound at the time of this post, and thus the 28-year-old is now officially a Major League player. A third-round pick for the Dodgers back in the 2018 draft, Rooney spent his whole pro career in the Los Angeles farm system until 2025, when he joined the Marlins as a minor league free agent. Miami then dealt Rooney to Houston earlier this month, and he has a 2.56 ERA and a 34.2% strikeout rate over 38 2/3 combined innings with the Marlins' and Astros' Triple-A affiliates."
"Those impressive numbers came with the downside of a 14.9% walk rate. Rooney has been prone to issuing free passes for most of his career, and a move to full-time bullpen work in 2023 only briefly solved his control issues. It remains to be seen if Rooney will get anything more than a cup of coffee in the Show, as the Astros have Steven Okert and as the primary left-handers in their bullpen."
AJ Blubaugh was optioned to Triple-A and left-hander John Rooney was called up to the Astros' roster as a fresh bullpen option. Rooney, 28, was a third-round pick of the Dodgers in 2018 and spent his pro career in Los Angeles' farm system until joining the Marlins in 2025 as a minor-league free agent. Miami traded Rooney to Houston earlier this month. He has a 2.56 ERA and a 34.2% strikeout rate across 38 2/3 Triple-A innings for the Marlins and Astros affiliates, but a 14.9% walk rate has persisted. The Astros lost several left-handers to injury, creating an opening for Rooney to earn an extended look if he performs against MLB hitters.
Read at MLB Trade Rumors
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