The Reds selected Herget's contract from Triple-A Louisville on Wednesday, Mark Sheldon of MLB.com reports.
Herget will provide the Reds with some additional bullpen depth as the 32-year-old makes his way to a major-league roster for just the second time in his career. The right-hander appeared in three games with the Rays in 2022, producing a 7.71 ERA and 1.29 WHIP with four strikeouts over seven innings. To make room for him on both the 40-man roster and the active roster, Bennett Sousa was designated for assignment and Joel Kuhnel was optioned to Louisville on Wednesday.