The San Diego Padres have made a key addition after trading in All-Star closer Josh Hader from the Milwaukee Brewers ahead of Tuesday's MLB Trade Deadline.

The addition of 28-year-old left-hander Hader is a major boost for the Padres, who have struggled in late-inning situations this season.

Hader is the 2022 league leader in saves, with 29 from 31 save opportunities this season, although he has career-worst 4.24 ERA which dipped to 12 during July.

The deal sees left-handed reliever Taylor Rogers, left-handed pitching prospect Robert Gasser, right-hander Dinelson Lamet and outfielder Esteury Ruiz sent to the Brewers.

"Josh Hader is one of the best closers in the league," Padres general manager A.J. Preller said.

"He's been there, done that, pitched in big spots, big playoff games. He's got elite stuff."

Hader, who has been with the Brewers since 2017, joins the Padres who have a 57-46 record to sit second in the National League West this season.

"Thank you for the support throughout my career," Hader wrote on Instagram. "Y'all have been great to me. The people, the energy, the love! There will always be a special place in my heart for MKE."

In other moves, the New York Yankees added right-handed starting pitcher Frankie Montas and closer Lou Trivino from the Oakland Athletics, along with reliever Scott Effross from the Chicago Cubs.

The Yankees, who have a 69-34 record, had previously brought in All-Star outfielder Andrew Benintendi from the Kansas City Royals.

The Houston Astros acquired first baseman Trey Mancini from the Baltimore Orioles along with catcher Christian Vazquez from the Boston Red Sox.

According to reports, outfielder Tommy Pham is set to join the Red Sox from the Cincinnati Reds.