Lucas Jacobsen

Lucas Jacobsen (born July 1, 1995) is an American professional baseball pitcher who is a free agent.

Amateur career
Jacobsen attended Westmont High School in Campbell, California. He went 7–2 with a 2.54 ERA and 55 strikeouts as a senior in 2013. Undrafted out of high school, he attended Santa Barbara City College. Jacobsen suffered a hairline fracture in his left elbow during the 2013 fall season, and choose to leave the team. He returned to the team for the following season after healing and recommitting to the game. He posted an 8–4 record with a 2.90 ERA and 62 strikeouts over $68 1/3$ innings in 2015 for Santa Barbara. Jacobsen transferred to California State University, Long Beach and posted a 0–2 record with a 3.30 ERA and 35 strikeouts over 30 innings for the Dirtbags in 2016. Jacobsen was drafted by the Texas Rangers in the 27th round of the 2016 MLB draft.

Professional career
Jacobsen made his professional debut in 2016 with the AZL Rangers of the Rookie-level Arizona League, going 1–0 with a 6.75 ERA and 12 strikeouts over $9 1/3$ innings. He split the 2017 season between the AZL and the Spokane Indians of the Low–A Northwest League, going a combined 3–0 with a 3.77 ERA and 25 strikeouts over $14 1/3$ innings. Jacobsen suffered a torn UCL during the 2017 season and underwent Tommy John surgery which caused him to miss the 2018 season. He returned in 2019 with the Hickory Crawdads of the Single–A South Atlantic League, going 1–4 with a 3.90 ERA and 48 strikeouts over 30 innings. Following the 2019 season, he played for the Auckland Tuatara of the Australian Baseball League.

Jacobsen did not play in a game in 2020 due to the cancellation of the minor league season because of the COVID-19 pandemic. Jacobsen also missed the entire 2021 season due to a lat muscle injury. He split the 2022 season between the Frisco RoughRiders of the Double-A Texas League and the Round Rock Express of the Triple-A Pacific Coast League, going a combined 0–1 with a 2.29 ERA and 30 strikeouts. Jacobsen logged only $19 2/3$ innings that year due to missing nearly 4 months with a left elbow impingement.

Jacobsen received a non-roster invitation to major league spring training in 2023 and returned to Round Rock to open the season. In 22 appearances for Round Rock, he struggled to a 7.40 ERA with 20 strikeouts across $24 1⁄3$ innings pitched. Jacobsen elected free agency at the conclusion of the season on November 6, 2023.