Lucas Erceg Bio
Lucas Stijepan Erceg (born May 1, 1995) is an American professional baseball pitcher for the Kansas City Royals of Major League Baseball (MLB). He has previously played in MLB for the Oakland Athletics, with whom he made his MLB debut in 2023. Known for his work out of the bullpen, Erceg has developed into a reliable late-inning arm since converting to full-time pitching in the minor leagues.
Originally drafted as a position player, Erceg spent his early professional years as a hitter before transitioning to the mound. His journey through the Milwaukee Brewers organization, and later Oakland and Kansas City, has been shaped by perseverance through personal challenges, including a well-documented recovery from alcohol dependency that began in 2020.
Early Life and Background
Lucas Stijepan Erceg was born on May 1, 1995, in Campbell, California, and grew up in the same community. His childhood was marked by difficult family circumstances. Erceg’s mother struggled with a drinking problem, and his father was abusive, creating an unstable home environment during his formative years.
He attended Westmont High School in Campbell, California, where he played baseball and developed as a two-way player. Following high school, Erceg enrolled at the University of California, Berkeley, in 2014, where he played college baseball for the California Golden Bears as both a pitcher and a third baseman. His performance on the field earned him first-team All-Pac-12 Conference honors in 2015.
Despite his athletic success at Cal, Erceg began drinking heavily and stopped attending classes, which led to him being ruled academically ineligible before the 2016 season. He transferred to Menlo College, a smaller institution where he continued to play and where he met his future wife, Emma.
Path to Baseball
After one year at Menlo College, the Milwaukee Brewers selected Erceg in the second round, with the 46th overall pick, of the 2016 Major League Baseball draft. He was regarded as a promising two-way prospect, capable of contributing both as a hitter and a pitcher. He made his professional debut with the Helena Brewers of the Rookie-level Pioneer League and quickly demonstrated his bat, hitting .400 over 26 games before earning a promotion to the Wisconsin Timber Rattlers of the Single-A Midwest League. He finished his first professional season with a .327 batting average, nine home runs, and 51 runs batted in (RBI) across 68 total games.
Erceg continued to progress through the Brewers’ system as a hitter, playing for the Carolina Mudcats of the High-A Carolina League in 2017, where he batted .256 with 15 home runs and 81 RBI in 127 games. He also appeared in three games for the Triple-A Colorado Springs Sky Sox at the end of that season. Heading into 2018, MLB.com ranked him as Milwaukee’s fourth-ranked prospect.
By 2021, Erceg began shifting his focus toward pitching while still playing third base. That season with Double-A Biloxi, he appeared in 22 games as a pitcher, logging a 2-6 record and 5.29 earned run average (ERA) with 45 strikeouts across 47 and 2/3 innings. The following year, he split time between Biloxi and the Triple-A Nashville Sounds, pitching in 49 games with a 3-4 record and 4.55 ERA. In 2023, he was assigned to Nashville to begin the year but struggled to a 6.46 ERA, setting the stage for a change of scenery.
Lucas Erceg Career
Milwaukee Brewers Organization (2016–2023)
Erceg spent the bulk of his developmental years in the Milwaukee Brewers system, working his way from Rookie ball to Triple-A. In 2018, he played for the Biloxi Shuckers of the Double-A Southern League, batting .248 with 13 home runs and 51 RBI in 123 games. The following year, he moved up to the San Antonio Missions of the Triple-A Pacific Coast League, where he slashed .218/.305/.398 with 15 home runs and 52 RBI over 116 games.
He did not play in 2020 due to the cancellation of the minor league season caused by the COVID-19 pandemic. When play resumed in 2021, his gradual transition to pitching laid the foundation for his future role as a reliever.
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 for the first time. That night, he made his MLB debut against the Houston Astros, allowing one run over one inning while recording one strikeout.
In his rookie campaign with Oakland, Erceg made 50 appearances out of the bullpen, compiling a 4-4 record and 4.75 ERA with 68 strikeouts across 55 innings pitched. He returned to the Athletics in 2024 and made 38 appearances, recording a 3.68 ERA with 41 strikeouts and three saves across 36 and 2/3 innings of work.
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 trade gave him an opportunity to take on a higher-leverage role, and he responded by making 23 appearances down the stretch for Kansas City, compiling an 0-3 record and 2.88 ERA with 31 strikeouts and 11 saves over 25 innings of work.
In 2025, Erceg made 61 appearances out of the bullpen for the Royals, posting an 8-4 record and 2.64 ERA with 48 strikeouts and two saves across 61 and 1/3 innings pitched. His season, however, was cut short on September 19, 2025, when he was placed on the injured list due to right shoulder impingement syndrome, ending his year.
Driving Style and Strengths
Erceg has established himself as a reliable late-inning reliever capable of generating swings and misses in high-leverage situations. His path from position player to pitcher has given him a unique understanding of the game from both sides, and his experience working through the upper minors has helped him adjust to the pace and pressure of MLB bullpen work.
Notable Events and Milestones
Erceg’s MLB debut on May 19, 2023, against the Houston Astros marked the realization of a long professional journey that began with a second-round selection in the 2016 MLB draft. His midseason trade to the Royals in 2024 and subsequent emergence as a high-volume setup man underscored his value, and his 11 saves in just 23 appearances after the deal highlighted his ability to perform in pressure-packed moments.
Lucas Erceg Career Wins
Lucas Stijepan Erceg’s win totals have evolved alongside his role change from position player to relief pitcher. While his early professional statistics reflect success as a hitter in the Brewers’ system, his most recent contributions have come on the mound in the major leagues.
MLB Highlights
Erceg’s first major league victory came during his 2023 rookie season with the Oakland Athletics, where he recorded four wins across 50 relief appearances. In 2024, split between Oakland and Kansas City, he added additional wins, including his eight victories with the Royals in 2025. His 2.64 ERA that season stood as one of the strongest marks of his career.
Other Wins & Performances
As a minor league hitter, Erceg showed flashes of offensive talent, including a .327 batting average in his debut season and a 15-home-run campaign with the Carolina Mudcats in 2017. His transition to pitching ultimately defined his professional trajectory, leading to his current standing as a key member of the Kansas City Royals’ bullpen.
Lucas Erceg Family
Family Background and Racing Lineage
Erceg’s father is from Croatia, giving the pitcher Croatian-American heritage. He grew up in Campbell, California, in a household shaped by his mother’s struggles with alcohol and his father’s abusive behavior, circumstances that influenced his own eventual battle with addiction.
Personal Life
Erceg met his wife, Emma, while attending Menlo College. The two became engaged in July 2021 and married the following year. In late June 2025, the couple announced that they were expecting their first child. Erceg has also been open about his journey to sobriety, which began on June 10, 2020, a date now sewn onto his baseball glove as a daily reminder of his recovery.
2025 Season Performance
Lucas Stijepan Erceg’s 2025 season with the Kansas City Royals represented a significant step forward in his role as a late-inning reliever. He made 61 appearances out of the bullpen, finishing the year with an 8-4 record and a 2.64 ERA, along with 48 strikeouts and two saves across 61 and 1/3 innings pitched. His workload reflected the trust the Royals placed in him following his strong finish to the 2024 campaign.
Unfortunately, his season came to an early end on September 19, 2025, when he was placed on the injured list with right shoulder impingement syndrome. The injury cut short what had been a career-best year and raised questions about his availability heading into the offseason.
Looking ahead, Erceg’s performance in 2025 solidified his place in the Royals’ bullpen plans, provided he recovers fully from his shoulder issue. With a personal life that includes his wife, Emma, and the expected arrival of their first child, Erceg enters the next chapter of his career motivated by both professional and personal milestones.