In 2024,Baumann made history by playing for five different franchises—the Orioles,Mariners,Giants,Angels,and Marlins. This tied the single-season record for most franchises played for,a feat previously achieved by Oliver Drake in 2018 and Bobo Leonard in 1924.[1]
On September 7,2021,Baumann made his major league debut with the Orioles against the Kansas City Royals at Oriole Park at Camden Yards.[10] In his debut he pitched 3+2⁄3 innings and allowed two hits and one walk.[11] Baumann struck out one batter and retired 11 of the 14 batters he faced. He also earned his first Major League win. In his rookie campaign, Baumann recorded a 9.90 ERA in four games.
Baumann pitched in 14 contests for Baltimore in 2022, registering a 4.72 ERA with 23 strikeouts across 34+1⁄3 innings of work.[12] On March 16, 2023, it was announced that Baumann would shift to a short-relief role rather than being a starter.[13] He made 60 appearances out of the bullpen for the Orioles, compiling a 10–1 record and 3.76 RRA with 61 strikeouts across 64+2⁄3 innings pitched.[14]
In 2024, Baumann made 17 relief appearances for Baltimore, logging a 3.44 ERA with 16 strikeouts across 18+1⁄3 innings pitched. On May 18, 2024, Baumann was designated for assignment by the Orioles.[15]
Seattle Mariners
On May 22, 2024, Baumann and Michael Pérez were traded to the Seattle Mariners in exchange for Blake Hunt.[16] In 18 appearances for Seattle, he logged a 5.51 ERA with 16 strikeouts across 16+1⁄3 innings pitched. Baumann was designated for assignment by the Mariners on July 19.[17]
San Francisco Giants
On, July 21, 2024, Baumann was claimed off waivers by the San Francisco Giants.[18] He made one appearance for the Giants, allowing two runs and recording two outs in a blowout victory against the Colorado Rockies on July 26. The following day, Baumann was designated for assignment.[19]
Los Angeles Angels
On July 30, 2024, Baumann was traded to the Los Angeles Angels in exchange for cash considerations.[20] In 10 games for the Angels, he worked to a 6.75 ERA with 7 strikeouts across 9+1⁄3 innings. Baumann was designated for assignment following the promotion of Ryan Zeferjahn on August 23.[21]
Miami Marlins
On August 25, 2024, Baumann was claimed off waivers by the Miami Marlins.[22] He tied Oliver Drake and Bobo Leonard's record for appearing with five different teams in a single season.[23] Baumann was responsible for giving up the historic 50th home run of the season to Shohei Ohtani as part of the first ever 50-50 season in the major league history.[24] In 11 appearances for Miami, he struggled to a 6.59 ERA with 18 strikeouts across 13+2⁄3 innings pitched. Baumann was released by the Marlins organization on December 9, in order to pursue an opportunity in Japan.[25][26]
Tokyo Yakult Swallows
On December 9, 2024, Baumann signed with the Tokyo Yakult Swallows of Nippon Professional Baseball.[27] He made 16 appearances for the Swallows in 2025, posting an 0-2 record and 4.20 ERA with 19 strikeouts over 15 innings of work. On October 14, 2025, the Swallows announced that they would not retain Baumann for the 2026 season.[28]
New York Mets
On January 1, 2026, Baumann signed a minor league contract with the New York Mets.[29][30]
Personal life
His older brother, Nick, also played baseball and football at Mahtomedi and starred on the defensive line for the Concordia Cobbers.[2]
Baumann married his fiancée, Nicole, in December 2023.[31] The wedding took place in Florida, where he resides in the offseason.
Their first child, a son, was born in September 2024.[32]
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