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

This represents an important acquisition for Philadelphia, as they are currently without reliever Jose Alvarado, who is serving an 80-game suspension due to PED use, which also makes 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 participated in a bullpen session for teams in Providence, R.I. this past weekend before joining Philadelphia, where “he looked very good” during the session, as reported by Heyman.

The Phillies’ decision to add Robertson isn’t unexpected, considering they are at the top of the National League East and have a chance to compete for the World Series once again.

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.