The Mariners are landing slugging third baseman Eugenio Suárez from the D-backs, a source told MLB.com’s Mark Feinsand on Wednesday night. The clubs have not confirmed the deal.

Suárez played for Seattle from 2022-23 before being dealt to Arizona in November 2023.

First baseman Tyler Locklear, Seattle’s ninth-ranked prospect per MLB Pipeline, and two pitching prospects are going back to Arizona in the deal, a source told MLB.com’s Daniel Kramer.

Suárez was the most coveted bat on the market leading up to the Deadline, thanks to a power display in his age-33 season that has him among baseball’s leaders in home runs (36) and RBIs (87).

Suárez has been a consistent offensive force all season, winning a record-tying four NL Player of the Week honors, and he made history against Atlanta on April 26, when he became the 19th player in history to hit four home runs in a game. Suárez earned his second All-Star selection and has already secured the sixth 30-homer season of his career.

Though his defensive metrics at the hot corner have declined this year (-6 outs above average), he was graded much more positively over the past two years, with +11 OAA in 2023 and +3 in ‘24.

It’s hard to overstate the turnaround that Suárez has experienced over the past year. On June 26, 2024, Suárez was hitting just .193 and the Diamondbacks were contemplating designating him for assignment.

From that point on, though, Suárez slashed .311/.359/.607 the rest of the way, nearly carrying the Diamondbacks to the postseason. That prompted the Diamondbacks to exercise Suárez’s $17 million option for 2025, and he picked up right where he left off at the start of this season.