Veteran right‑handed reliever David Robertson is going to the Phillies, The Post’s Jon Heyman confirmed Sunday.

This represents a significant addition for Philadelphia, as they are missing reliever Jose Alvarado, who is serving an 80-game suspension for PED use, which also renders him ineligible for the playoffs.

Robertson, 40, will earn $6.22 million for the remainder of the 2025 season in a prorated deal.

Robertson posted a solid 3.00 ERA with the Rangers in 2024, striking out 99 batters over 72 innings in 68 outings.

He also went 3-4 with two saves.

He conducted a bullpen session for teams in Providence, R.I. over the weekend before signing with Philadelphia, and according to Heyman, he “looked very good” during the session.

Given their current position at the top of the National League East and the opportunity to compete for the World Series again, it’s no surprise that the Phillies are interested in adding Robertson.

Robertson also had two previous stints in Philadelphia.

In 2019, he pitched in just seven games and posted an uncharacteristically high 5.40 ERA before undergoing season-ending Tommy John surgery.

In 2022, he posted a 2.70 ERA across 22 appearances, recording six saves in the process.

During the 2022 playoff run that resulted in the Phillies’ first World Series appearance in 13 years, Robertson pitched in eight games and held a 1.17 ERA.

Over his 16-year career, Robertson has been one of baseball’s most durable and reliable late-inning arms.

For his career, Robertson has accumulated 177 saves with a 2.91 career ERA across 860 relief appearances.

He debuted with the Yankees in 2008 and was an All-Star in 2011.

He later earned his first World Series ring with them in 2009.

Robertson returned to The Bronx from 2017-18 and later pitched for the Mets in 2023, delivering a strong 2.05 ERA over 40 games and 44 innings of bullpen work.