Adam John Kolarek (born January 14, 1989) is an American professional baseball pitcher who is a free agent.

He has previously played in Major League Baseball (MLB) for the Tampa Bay Rays, Oakland Athletics, Los Angeles Dodgers, and New York Mets.

Back with Binghamton for that year's regular season, his ERA was 6.07 in 48 relief appearances, though he had a 1.12 mark in six games for the Gigantes de Carolina in the Puerto Rican Winter League.

[12] On October 23, 2015, Kolarek signed a minor league contract with the Baltimore Orioles organization and was assigned to the Double-A Bowie Baysox.

[13] On December 10, 2015, the Tampa Bay Rays selected Kolarek in the minor league phase of the Rule 5 draft.

[14] He split the 2016 season between the Triple-A Durham Bulls and the Double-A Montgomery Biscuits, posting a 3-4 record and 3.13 ERA in 47 appearances between the two teams, holding left-handers to limited lefties to a .143 average.

[15] On November 19, 2016, Kolarek signed a minor league contract with the Atlanta Braves organization that included an invitation to Spring Training.

[16] On March 27, 2017, Kolarek signed a minor league contract to return to the Tampa Bay Rays organization.

[12][18] On September 3, Kolarek was designated for assignment by Tampa Bay after struggling to a 6.48 ERA across 12 appearances in his rookie year.

[21] On July 31, 2019, the Rays traded Kolarek to the Los Angeles Dodgers in exchange for minor leaguer Niko Hulsizer.

[12] He appeared in four games in the postseason, working 3+1⁄3 innings, allowing three runs as the Dodgers won the 2020 World Series.

[9] On February 12, 2021, Kolarek was traded to the Oakland Athletics (along with Cody Thomas) in return for Sheldon Neuse and Gus Varland.

[26] On December 15, 2022, Kolarek signed a minor league contract with the Los Angeles Dodgers organization.

[27] He was assigned to the Triple–A Oklahoma City Dodgers to begin the 2023 season, where he pitched in 21 games and posted a 2.18 ERA with 12 strikeouts in 20+2⁄3 innings of work.

[30] On August 1, 2023, Kolarek and Phil Bickford were traded to the New York Mets in exchange for cash considerations.

[33] On August 30, Kolarek cleared waivers and elected free agency in lieu of an outright assignment.

[40][41][42][43] He would have played for Team Israel manager Ian Kinsler, and alongside outfielder Joc Pederson and starting pitcher Dean Kremer, among others.