New York Mets

On May 31, 2012, Crismatt signed with the New York Mets and made his professional debut that same season for the Dominican Summer League (DSL) Mets. In 19 relief appearances he had a 4–0 record with a 4.26 Earned Run Average (ERA).^[1] He remained with the DSL Mets in 2013, where he compiled a 4–2 record and 1.33 ERA in 40+2⁄3 relief innings pitched and 2014 with the Gulf Coast League (GCL) Mets where he was 1–1 with a 2.25 ERA in 19 games out of the bullpen.^[1] In 2015, he pitched for the Kingsport Mets where he was 6–1 with a 2.90 ERA in 12 games (eight starts), and in 2016 he played with the Brooklyn Cyclones, Columbia Fireflies, and Binghamton Mets where he posted a combined 1–4 record and 2.47 ERA in 65+2⁄3 innings pitched.^[1] Crismatt spent 2017 with the St. Lucie Mets where he was 6–13 with a 3.95 ERA in 26 games (25 starts).^[2]

Crismatt split the 2018 season between Double–A Binghamton and the Triple–A Las Vegas 51s. In 27 starts between the two affiliates, he accumulated an 11–10 record and 5.00 ERA with 140 strikeouts across 144 innings pitched. Crismatt elected free agency following the season on November 2, 2018.^[3]

Seattle Mariners

On January 24, 2019, Crismatt signed a minor league deal with the Seattle Mariners.^[2] He split the 2019 season between the Double-A Arkansas Travelers and the Triple-A Tacoma Rainiers, with a 4–10 record and 5.04 ERA in 27 games (21 starts).^[1] He became a free agent following the season.^[4]

St. Louis Cardinals

On November 19, 2019, Crismatt signed a minor league deal with the St. Louis Cardinals^[2] and was invited to major league spring training.^[5] When the 2020 minor league season was cancelled because of the COVID-19 pandemic, Crismatt was assigned to the Cardinals alternate site training camp.^[6] On August 17, he was selected to the active roster.^[7] He made his major league debut that day, in the second game of a doubleheader against the Chicago Cubs, throwing one scoreless inning. His first MLB strikeout was of Javier Báez.^[8] Crismatt pitched in six games for the Cardinals, allowing three runs in 8+1⁄3 innings and striking out eight batters.^[9] On October 30, 2020, Crismatt was outrighted off of the 40-man roster^[10] and he became a free agent on November 2, 2020.^[11]

San Diego Padres

On December 18, 2020, Crismatt signed a minor league contract with the San Diego Padres organization.^[12] On April 1, 2021, he was added to the major league roster.^[13] In 2021, he recorded a 3.76 ERA with 71 strikeouts in 81+1⁄3 innings.^[14] He recorded his first career win by pitching 2⁄3 of an inning against the Los Angeles Dodgers on April 22.^[15]

Crismatt made a career–high 50 appearances for San Diego in 2022, registering a 5–2 record and 2.94 ERA with 65 strikeouts in 67+1⁄3 innings of work.^[16] In seven games for the Padres in 2023, he struggled to a 9.82 ERA with 9 strikeouts in 11 innings pitched^[14] and was designated for assignment on June 20.^[17] On June 25, he cleared waivers and elected free agency in lieu of an outright assignment.^[18]

Arizona Diamondbacks

On June 30, 2023, Crismatt signed a minor league contract with the Arizona Diamondbacks organization.^[2] In seven games for the Triple–A Reno Aces, he posted an 8.04 ERA with 15 strikeouts in 15+2⁄3 innings pitched.^[1] He was released by the Diamondbacks on August 2^[19] but re–signed a few days later on a new minor league deal.^[20] He was selected to the major league roster on August 22^[21] but only made one appearance for Arizona, tossing two scoreless innings against the Cincinnati Reds on August 26^[22] and was designated for assignment again the following day.^[23] He cleared waivers and was sent outright to Reno on August 29^[24] and elected free agency on October 10.^[2]

Los Angeles Dodgers

On December 8, 2023, Crismatt signed a minor league contract with the Los Angeles Dodgers^[25] and was assigned to the Triple-A Oklahoma City Baseball Club to start the season.^[26] The Dodgers selected his contract on March 31, before he had appeared in any minor league games.^[27] He pitched two scoreless innings that day against the Cardinals, but was designated for assignment the following day^[28] and outrighted to Oklahoma City after clearing waivers on April 5.^[29] On April 27, the Dodgers selected his contract and added him back to the active roster.^[30]