Keller made his debut in 2019, but established himself in the Pirates' rotation in 2022, posting a 3.91 ERA through 29 starts. He made the All-Star game in the following season, joining closer David Bednar as the only two Pirates to make the Midsummer Classic that season.

As the Phillies assess the potential options, they've reportedly indicated interest in a pair of relievers in the American League, with one standing out as a potential star addition. "The Phillies have a specific interest in the American League Central;

The Philadelphia Phillies are locked in a tight race with the New York Mets for the National League East lead. They could be looking for upgrades in the outfield at the trade deadline to help win the division.