Yankees add relievers Mark Leiter Jr., Enyel De Los Santos

PHILADELPHIA -- After weeks of scouring the trade market for bullpen help, the New York Yankees have acquired right-handed reliever Mark Leiter Jr. from the Chicago Cubs for two minor leaguers, the teams announced Tuesday.

The Cubs will receive Double-A shortstop Ben Cowles and Triple-A reliever Jack Neely for Leiter, 33, whose father pitched in eight games for the Yankees as a rookie in 1990 and uncle Al began his 19-year major league career pitching in parts of three seasons for the Yankees in the late 1980s.

The Yankees have been on the hunt for a swing-and-miss specialist. Leiter qualifies as one of the best in 2024 -- and arrives with two years of team control beyond this season. Leiter isn't the typical strikeout artist -- his sinker, his hardest pitch, averages 91.3 mph -- but his splitter has been one of the elite weapons in baseball this season. Leiter has limited batters to a .053 average (3-for-57) with 39 strikeouts, a 62.7% whiff rate and zero extra-base hits with the pitch.

The Yankees also landed right-handed reliever Enyel De Los Santos from the San Diego Padres before the deadline. New York sent outfielder Brandon Lockridge to the Padres while getting minor league right-hander Thomas Balboni Jr. from the Padres to complete that deal.

De Los Santos, 28, was 1-2 with a 4.46 ERA in 44 relief appearances, striking out 48 and walking 13 in 40 innings while allowing 11 home runs. De Los Santos has a $1.16 million salary and is eligible for arbitration in each of the next two offseasons, then free agency after the 2026 World Series.

Overall, Leiter ranks in the 98th percentile with a 36.7 whiff percentage. His 34.9% strikeout rate is tied for 12th in the majors among relievers with at least 30 innings pitched. The peripheral metrics suggest his 4.21 ERA in 39 appearances is a result of bad luck. His 2.11 FIP is sixth among relievers. His 2.61 ERA is in the 96th percentile. His .301 BABIP is high.

"More than anything, he's a good pitcher," Yankees manager Aaron Boone said of Leiter before Tuesday night's game in Philadelphia. "He's also thrown the ball really well the last month. We're excited to get him, and I know he's excited to get here."

The Yankees are betting on the underlying evidence suggesting he'll continue to produce the much-improved results he has posted since coming off the injured list on July 9. Leiter had a 5.34 ERA in 32 outings before he was sidelined with a strained forearm June 23. In seven games since his return, he's logged 7 scoreless innings with 14 strikeouts to zero walks.

He'll bolster a bullpen that jumped out to a strong start but ranks 22nd in ERA since June 1. All-Star closer Clay Holmes, in particular, has struggled of late, posting a 6.08 ERA and allowing runs in six of his past 13 outings since June 13.

For the boost down the stretch, the Yankees gave up two prospects enjoying strong seasons in the minors.

Cowles, a 24-year-old utility infielder, was batting .295 with nine home runs and an .848 OPS for Double-A Somerset before the team placed him on the seven-day injured list. He was a 10th-round pick out of Maryland in the 2021 draft.

The Yankees selected the 6-foot-8 Neely in the next round of that draft. The right-hander, also 24, has a 2.81 ERA in 31 relief appearances between Double-A Somerset and Triple-A Scranton/Wilkes-Barre while striking out 14.8 batters per nine innings.

The Cubs will need to put both players on the 40-man roster this offseason to protect them from the Rule 5 draft.

New York has now traded away five prospects in recent days after trading three to the Miami Marlins for infielder/outfielder Jazz Chisholm Jr.

Also on Tuesday, the Yankees traded reliever Caleb Ferguson to the Astros, sources told ESPN's Buster Olney. Ferguson had a 5.13 ERA in 42 appearances out of the bullpen this season.

Information from The Associated Press was used in this report.