The Mets are adding another former Yankee to bolster their bullpen.
Veteran reliever David Robertson and the Mets came to an agreement on a one-year, $10 million contract on Thursday night, The Post’s Joel Sherman confirmed, adding to the club’s free-agent haul this week that also included Brandon Nimmo, Justin Verlander and Jose Quintana.
Robertson, a right-hander who will pitch next season at the age of 38, posted a 2.40 ERA with 20 saves last season, which he started with the Cubs before being dealt to the Phillies at the trade deadline. He struck out 81 and walked 35 in 63 ²/₃ innings.
The Mets had also been interested in acquiring Robertson at the trade deadline, in part because he was especially effective against lefties — holding them to a .547 OPS in his career and a .550 OPS in 2022 (compared a .672 OPS by righties against him in his career and .629 in 2022).
With almost all of their bullpen from last season hitting free agency this offseason, the Mets were tasked with rebuilding their relief corps. They started by re-signing closer Edwin Diaz to a five-year, $102 million contract at the beginning of free agency, followed by acquiring Elieser Hernandez and Jeff Brigham in a trade with the Marlins, claiming Stephen Ridings off waivers from the Yankees, trading for lefty Brooks Raley on Wednesday and then selecting Zach Greene from the Yankees in the Rule 5 draft.
Robertson should slide into a setup role to help bridge the gap to Diaz, a spot that was often filled last year by Adam Ottavino, Seth Lugo or Trevor May — all of whom remain on the free-agent market.
After coming into the major leagues with the Yankees in 2008 (and making his debut against the Mets), Robertson pitched in The Bronx through 2014 before later coming back for 2017-2018. In 501 career games as a Yankee, he posted a 2.75 ERA with 53 saves.
Robertson’s arsenal includes a cutter, curveball and slider. His curveball is especially strong, holding opponents to a .093 batting average and .213 slugging percentage in 2022.
