Cincinnati Reds The
Cincinnati Reds selected Herget in the 22nd round of the
2015 MLB draft. He made his professional debut with the
Billings Mustangs, with a 3–0 record, 3.20 ERA, and 26 strikeouts over innings in 2015. where he compiled a 4–4 record, 1.78 ERA, and 83 strikeouts in innings. He was selected for the
All-Star Futures Game in July. He returned to Louisville in 2018, going 1–3 with a 3.47 ERA and 65 strikeouts over innings. Herget returned to Louisville to begin 2019, going 3–4 with a 2.91 ERA and 68 strikeouts over innings. He made his debut on July 7, allowing 3 runs in innings pitched. He pitched innings for the Reds in 2019, posting a 4.26 ERA.
Texas Rangers On December 2, 2019, Herget was claimed off
waivers by the
Texas Rangers. He was again designated for assignment on December 21. He was outrighted to the minors on January 9, 2020. On July 31, Herget's contract was selected to the 40-man roster. He earned his first MLB win on September 26 after blowing a save. On February 16, 2021, Herget was designated for assignment again after Texas acquired
Josh Sborz. On February 20, Herget was outrighted and invited to spring training as a non-roster invitee. On August 1, Texas selected his contact to the active roster, after he opened the season with the
Round Rock Express. After giving up 4 runs in 4 innings pitched, Herget was designated for assignment on August 13. He became a free agent on August 15.
Los Angeles Angels On August 16, 2021, Herget signed a minor league contract with the
Los Angeles Angels. He was then assigned to the Triple-A
Salt Lake Bees. After making 4 appearances with Salt Lake, going 0–1 with a 13.50 ERA and 5 strikeouts, the Angels selected Herget's contract on August 31. He had a 2.48 ERA with nine
saves in 69 innings while working almost exclusively out of the bullpen in
2022. On April 28, Herget was designated for assignment following the promotion of
Zac Kristofak.
Atlanta Braves On May 2, 2024, Herget was traded to the
Atlanta Braves in exchange for cash and assigned to the Triple-A
Gwinnett Stripers. On May 25, he was recalled to the majors, making his Braves debut later that day, pitching a scoreless inning with two strikeouts against the
Pittsburgh Pirates. In 8 games for the Braves, Herget had a 4.38 ERA with 15 strikeouts over innings pitched. He was designated for assignment by Atlanta on September 11.
Chicago Cubs On September 13, 2024, Herget was claimed off waivers by the
Chicago Cubs. He made four scoreless appearances for the Triple-A
Iowa Cubs, striking out 5 batters in innings pitched. Herget was designated for assignment by Chicago on November 4.
Colorado Rockies On November 8, 2024, Herget was claimed off waivers by the
Colorado Rockies. He pitched in a career-high innings and 59 games, going 1–2 with a 2.48 ERA. After the successful season, he said he was considering converting to a starting pitcher. ==Pitching style==