Original:  In 2019, he was traded to the Astros in a blockbuster deal,  becoming a notable third piece in their historic starting rotation on the way to their second World Series berth in three years.
Revised:  In 2019, he was traded to the Astros in a blockbuster deal, becoming a notable third piece in their historic starting rotation during their quest for a second World Series berth in three years.
Edit intent: clarity