Lucas Erceg Bio
Lucas Stijepan Erceg is an American professional baseball pitcher for the Kansas City Royals of Major League Baseball (MLB). A right-handed reliever, he made his MLB debut with the Oakland Athletics in 2023 before being traded to Kansas City in 2024. Erceg is known for his late-inning work out of the bullpen and for the personal turnaround that reshaped his career.
Drafted by the Milwaukee Brewers in 2016 as a position player, Erceg spent several seasons in the minor leagues before transitioning to pitching full time. His combination of a power arm and sharp control has made him a trusted option in high-leverage situations for the Royals.
Early Life and Background
Lucas Stijepan Erceg was born on May 1, 1995, in Campbell, California. He grew up in the same San Francisco Bay Area community where he later attended Westmont High School. Erceg’s father is from Croatia, giving the family a mixed heritage that shaped his upbringing in Northern California.
As a child, Erceg faced a difficult home life. His mother struggled with a drinking problem and his father was abusive, creating an unstable environment during his early years. Despite these challenges, he developed a strong interest in baseball and emerged as a promising two-way player in high school.
After graduating from Westmont High School, Erceg enrolled at the University of California, Berkeley in 2014. He played college baseball for the California Golden Bears as both a pitcher and a third baseman, earning first team All-Pac-12 Conference honors in 2015.
Path to Baseball
Erceg’s college career took a difficult turn prior to the 2016 season when he was ruled academically ineligible. He had begun drinking heavily and had stopped attending classes, which forced him to leave Berkeley. The setback redirected him to Menlo College, where he continued his playing career and worked to stabilize his personal life.
After one year at Menlo, the Milwaukee Brewers selected Erceg in the second round of the 2016 MLB Draft, with the 46th overall pick. The selection validated his raw tools as a hitter and gave him a clear professional pathway after a turbulent college stretch.
Erceg made his professional debut with the Helena Brewers of the Rookie-level Pioneer League. He hit .400 over 26 games and was quickly promoted to the Wisconsin Timber Rattlers of the Single-A Midwest League, finishing his first professional season with a .327 batting average, nine home runs, and 51 runs batted in across 68 total games.
Lucas Erceg Career
Early Career (2016–2020)
In 2017, Erceg played for the Carolina Mudcats of the High-A Carolina League and batted .256 with 15 home runs and 81 runs batted in over 127 games. He also appeared in three games for the Triple-A Colorado Springs Sky Sox at the end of the season. MLB.com ranked him as Milwaukee’s fourth-ranked prospect entering 2018.
Erceg spent the 2018 season with the Biloxi Shuckers of the Double-A Southern League and followed that with a 2019 campaign at Triple-A San Antonio. He did not play in 2020 after the minor league season was canceled due to the COVID-19 pandemic, a pause that gave him time to reassess his direction as a player.
Position Player to Pitcher Transition (2021–2022)
In 2021, Erceg began focusing more of his effort on pitching while still playing third base. Pitching exclusively for Double-A Biloxi, he logged a 2-6 record with a 5.29 earned run average and 45 strikeouts in 47 and 2/3 innings across 22 games. The experiment showed enough promise to shift his career trajectory.
Erceg split the 2022 season between Biloxi and the Triple-A Nashville Sounds, pitching in 49 games and registering a 3-4 record, 4.55 earned run average, 69 strikeouts, and two saves over 61 and 1/3 innings. He was assigned to Nashville to begin 2023 but struggled to a 6.46 earned run average before a trade altered his path.
Oakland Athletics (2023–2024)
On May 17, 2023, the Oakland Athletics acquired Erceg from the Brewers in exchange for cash considerations. Two days later, on May 19, he was added to the 40-man roster and promoted to the major leagues. He made his MLB debut that night against the Houston Astros, allowing one run over one inning and recording one strikeout.
In his rookie campaign, Erceg made 50 relief appearances and compiled a 4-4 record with a 4.75 earned run average and 68 strikeouts across 55 innings. The Athletics continued to use him out of the bullpen in 2024, when he recorded a 3.68 earned run average, 41 strikeouts, and three saves over 36 and 2/3 innings in 38 appearances.
Kansas City Royals (2024–Present)
On July 30, 2024, the Athletics traded Erceg to the Kansas City Royals in exchange for Mason Barnett, Will Klein, and Jared Dickey. The move gave Erceg a clearer late-inning role, and he responded with 23 appearances down the stretch, posting an 0-3 record, 2.88 earned run average, 31 strikeouts, and 11 saves over 25 innings.
Erceg made 61 relief appearances for Kansas City in 2025, finishing with an 8-4 record, 2.64 earned run average, 48 strikeouts, and two saves across 61 and 1/3 innings. His season ended on September 19, 2025, when he was placed on the injured list with right shoulder impingement syndrome.
Notable Events and Milestones
Erceg’s MLB debut on May 19, 2023, against the Houston Astros marked the culmination of a long minor league journey that began in 2016. His 11 saves after joining the Royals in 2024 established him as a trusted closer option in Kansas City, and his 8-4 record in 2025 reflected his growing consistency in high-leverage outings.
Lucas Erceg Career Wins
Across his major league career, Erceg has built a résumé out of the bullpen rather than as a traditional starter. His win totals have been modest as a reliever, but his save totals and earned run averages demonstrate his value in late-inning situations for both Oakland and Kansas City.
MLB Highlights
Erceg’s most recent major league win total reflects his work as a multi-inning reliever. His combined MLB statistics through June 21, 2026, include a 17-17 win-loss record, 3.79 earned run average, and 212 strikeouts, underscoring both his durability and his swing-and-miss stuff at the highest level.
Other Performances
Earlier in his career, Erceg was used primarily as a hitter in the minor leagues, posting a .327 batting average in his debut professional season and earning recognition as one of Milwaukee’s top prospects. His eventual transition to pitching ultimately defined his major league path.
Lucas Erceg Family
Family Background and Personal Lineage
Lucas Stijepan Erceg’s father is from Croatia, giving the pitcher a Croatian-American family background rooted in Campbell, California. Erceg has spoken openly about the difficulties of his upbringing, including his mother’s drinking problem and his father’s abusive behavior, experiences that shaped his resilience both on and off the field.
Personal Life
Erceg met his wife, Emma, while attending Menlo College, and the couple became engaged in July 2021 before marrying the following year. In late June 2025, Lucas and Emma announced they were expecting their first child, a son due in 2026. His first day of sobriety, June 10, 2020, is sewn onto his baseball glove as a daily reminder of his journey.
2025 Season Performance
Erceg’s 2025 campaign with the Kansas City Royals represented his first full season in a high-leverage relief role. He appeared in 61 games out of the bullpen and posted an 8-4 record with a 2.64 earned run average, 48 strikeouts, and two saves across 61 and 1/3 innings. His consistency helped stabilize the Royals’ late-inning options throughout the summer months.
His season was cut short on September 19, 2025, when right shoulder impingement syndrome landed him on the injured list. The injury came at a difficult stretch for Kansas City but did not diminish the overall impact of his workload and effectiveness during the year.
Looking ahead, Erceg is expected to remain a central figure in the Royals’ bullpen plans once he recovers. His combination of swing-and-miss stuff, late-inning poise, and a clear personal foundation following his sobriety journey gives Kansas City a reliable arm to build around in future seasons.
