Adam Cimber was born August 15, 1990, in Portland, Oregon. He is a pitcher in the MLB.
The San Diego Padres selected Cimber in the ninth round of the 2013 Major League Baseball draft. He signed and spent 2013 with the Eugene Emeralds where he was 3–1 with a 2.56 ERA in 28 relief appearances. In 2014, he played for the Lake Elsinore Storm where he pitched to a 5–3 record, 2.90 ERA, and 1.15 walks plus hits per inning pitched (WHIP) in 52 games, and in 2015, he pitched for both the San Antonio Missions and El Paso Chihuahuas where he posted a combined 4–2 record and 3.05 ERA in 46 total games between both teams. Cimber spent 2016 with both San Antonio and El Paso where he was 3–3 with a 3.77 ERA in 46 games and 2017 with the same two teams, going 5–2 with a 2.90 ERA with an 0.90 WHIP in 80 2⁄3 innings pitched.
On July 19, 2018, the Padres traded Cimber and Brad Hand to the Cleveland Indians for Francisco Mejía. He finished his 2018 season with a 3–8 record and a 3.42 ERA in seventy relief appearances, and shared the major league lead in intentional walks, with nine, while he had a total of only 17 walks.
With the 2020 Cleveland Indians, Cimber appeared in 14 games, with a 3.97 ERA and five strikeouts in 11 1⁄3 innings pitched. Cimber was designated for assignment on November 25, 2020.
On June 29, 2021, Cimber was traded to the Toronto Blue Jays alongside Corey Dickerson in exchange for Joe Panik and minor league pitcher Andrew McInvale. Cimber made 39 appearances in 2021 for the Blue Jays, going 2-2 with a 1.69 ERA and 30 strikeouts.
On March 22, 2022, Cimber signed a $1.575 million contract with the Blue Jays, avoiding salary arbitration.