The Boston Red Sox made a big splash at the MLB trade deadline Monday, acquiring three-time All-Star catcher Adley Rutschman from the Baltimore Orioles.

The Red Sox received Rutschman and catcher Jake Rogers for catcher Carlos Narvaez, pitching prospects Anthony Eyanson and Kyson Witherspoon, outfield prospect Enddy Azocar and a player to be named.

“We didn’t want to go through a deadline where we kind of just rearranged the chairs but didn’t actually get better and introduce the possibility of messing with the culture and the environment,” Red Sox chief baseball officer Craig Breslow said. “We were aggressive in bringing players in and we were positioning ourselves to reach our objective, which is to try and win a World Series.”

In another move involving a former top-five draft pick, Boston traded shortstop Marcelo Mayer — the fourth overall pick in 2021 — to San Francisco for left-handed reliever Erik Miller. The Red Sox also dealt right-hander Tyler Uberstine to Atlanta for outfielder Eli White.

In Mayer’s case, it ends a short and injury-plagued run in Boston that saw the 23-year-old play in only 114 games over two seasons. His trade comes while he is on the injured list recuperating from a stress reaction in his left forearm.

Breslow acknowledged the moves were about taking advantage of the moment they’re in.

“Over the last month and a half or so this team has demonstrated an incredible resilience and relentlessness and put itself kind of firmly in the playoff picture,” he said. “And they deserved — and our fans deserve — our effort, and the efforts from the front office to try and find ways to make it better.”

Rutschman has been on the injured list since July 18 with left wrist inflammation. Rutschman, who is batting .251 with eight home runs and 47 RBI this year, made the All-Star team, as he did in 2023 and 2024. He finished second in Rookie of the Year voting in 2022 and ninth in MVP voting in 2023.

If he can return to the field soon, Rutschman is a significant addition for a Boston team that stormed back into the postseason picture with a 15-game winning streak last month. The Red Sox needed catching help, and their offense is also dealing with injuries to Triston Casas, Trevor Story, Roman Anthony and even the recently acquired Curtis Mead.

The Orioles drafted Rutschman with the No. 1 overall pick in 2019, but unlike Bobby Witt Jr., the second pick that year, he hasn’t signed a long-term contract. Rutschman can become a free agent after next season.

Trading him to an AL East rival is a bitter pill for some Baltimore fans. In many ways he represented both the success and failure of the past few years for the Orioles. He made his debut in 2022 and the team took off, finishing with a winning record that year and then storming to a 101-win campaign in 2023.

Baltimore made the playoffs in 2024, but Rutschman slumped down the stretch and was unable to rebound in 2025, when the Orioles collapsed to a last-place finish. He’s been better this year but has played in only 67 games. Baltimore is 54-58 and entered Monday 2 1/2 games behind the final playoff spot in the American League.

Samuel Basallo, who has 16 homers this season, now becomes Baltimore’s clear No. 1 catcher. However, the 21-year-old Basallo is currently on the injured list as well.

The Orioles acquired Rogers from the Tigers on Thursday.

Narvaez was in his second season with the Red Sox after coming up in the Yankees’ system. He played 118 games in 2025, hitting .241 with 15 home runs and 50 RBI, but struggled this season, hitting just .187 with three homers and 10 RBI in 62 games.

Eyanson is the Red Sox’s No. 2 ranked prospect. The right-handed starting pitcher is 4-0 with a 1.32 ERA in his first season of professional baseball. He started the season with High-A Greenville and was promoted to the Double-A Portland Sea Dogs in May. Eyanson made 11 appearances, including 10 starts for Portland.

The Red Sox selected Mayer with the fourth pick in the 2021 draft. He struggled to stay healthy, never playing more than 91 games in a season in the minor leagues. He played 43 games for the Portland Sea Dogs in 2023 and 77 in 2024. He was called up to Boston in 2025 and played 44 games before suffering a wrist injury that required surgery. He played 70 games with Boston this season before going on the injured list.

The right-handed Witherspoon was selected by the Red Sox in the first round of the MLB draft in 2025. Azocar is batting .286 with 18 home runs and 63 RBI at two levels this season.

Miller has made 38 appearances for the Giants this season. He is 2-0 with a 2.76 ERA in 32 2/3 innings. He has 45 strikeouts.

White, a 32-year-old, right-handed hitting outfielder, has five home runs and 17 RBI in 69 games for Atlanta this season. He was sent to Boston for Uberstine, who pitched one game for the Red Sox this season.