Jack Kochanowicz Bio
Jack Von Kochanowicz is an American professional baseball pitcher for the Los Angeles Angels of Major League Baseball. He made his MLB debut in 2024 and has emerged as a promising young talent on the mound despite facing setbacks early in his career. Born on December 22, 2000, Kochanowicz was drafted by the Los Angeles Angels in the third round of the 2019 MLB draft and has steadily worked his way through the minor leagues to reach the highest level of the sport.
Early Life and Background
Jack Von Kochanowicz grew up in Rosemont, Pennsylvania, where he attended Harriton High School. During his high school years, he developed his pitching skills playing for the travel baseball club Houston Banditos after his freshman season. His standout performances at the high school level caught the attention of Major League Baseball scouts, setting the stage for his future professional career.
Kochanowicz demonstrated promising stuff as a young pitcher in the amateur ranks. His ability to miss bats and compete at a high level against other top prospects made him an attractive draft prospect heading into the 2019 MLB Draft.
Path to Professional Baseball
Kochanowicz entered the 2019 MLB Draft with high expectations following his strong high school career. The Los Angeles Angels selected him in the third round with the 92nd overall pick. The selection represented a significant milestone, as he joined an organization with a rich history of developing pitching talent. He signed shortly after being selected, beginning his journey toward professional baseball.
The transition to professional baseball was not without obstacles. The COVID-19 pandemic canceled the entire 2020 minor league season, preventing Kochanowicz from making his professional debut that year. This setback forced him to wait until 2021 to begin his career on the mound against professional competition.
Despite the lost season, Kochanowicz remained focused on his development. He used the time to refine his craft and prepare for the challenges of professional hitters. When minor league baseball resumed in 2021, he was ready to make his long-awaited professional debut.
Jack Kochanowicz Career
Minor League Development (2021–2023)
Kochanowicz made his professional debut in 2021 with the Inland Empire 66ers, the Single-A affiliate of the Los Angeles Angels. He appeared in 20 games, making 18 starts, and logged a 4–2 record with a 6.91 earned run average and 73 strikeouts across the season. The performance showed his potential while also highlighting areas for growth in his game.
He returned to Inland Empire for the 2022 season, where he continued to hone his skills. Over 17 appearances with nine starts, Kochanowicz posted a 4–4 record with a 4.99 ERA and 53 strikeouts. His strong performance earned him California League Pitcher of the Week honors in mid-July, a recognition of his improving consistency on the mound.
The 2023 season saw Kochanowicz take a significant step forward in his development. He split the campaign between the High-A Tri-City Dust Devils and the Double-A Rocket City Trash Pandas. Across 21 starts between the two affiliates, he compiled a 5–5 record with a 5.27 ERA, striking out 69 batters over 94 innings pitched. The promotion to Double-A represented an important milestone in his progression toward MLB.
Following the 2023 season, on November 13, the Angels added Kochanowicz to their 40-man roster to protect him from the Rule 5 Draft. This move signaled the organization’s belief in his potential and their commitment to his development as a future contributor at the major league level.
Los Angeles Angels Breakthrough (2024–Present)
Kochanowicz began the 2024 season with the Triple-A Salt Lake Bees, continuing his development in the minor leagues. His strong performance earned him a promotion to the majors on July 11, 2024, when the Angels selected his contract from Salt Lake. He made his MLB debut that same day against the Seattle Mariners, throwing three innings and allowing five runs on seven hits while hitting two batters with pitches in a game the Angels lost.
The debut provided valuable experience despite the challenging results. Kochanowicz continued to make starts for the Angels throughout the remainder of the 2024 season, gaining precious major league innings. He earned his first MLB victory on August 11 against the Washington Nationals, a milestone that represented the culmination of his journey from high school prospect to big league pitcher.
The 2025 season saw Kochanowicz become a regular member of the Angels starting rotation. He made 13 starts for Los Angeles in 2026, compiling a 2–5 record with a 6.19 ERA and 47 strikeouts over 64 innings of work. However, his 2026 campaign was cut short when he underwent Tommy John surgery on June 9, ending his season prematurely. The elbow injury represents a significant hurdle in his young career, but recovery and rehabilitation from the procedure are expected to allow him to return to the mound in the future.
Pitching Style and Strengths
Kochanowicz has shown the ability to generate swing-and-miss stuff throughout his minor league career. His fastball sits in the low-to-mid 90s, and he complements it with a developing offspeed arsenal. As he continues to refine his command and add consistency to his secondary offerings, he has the potential to become an effective mid-rotation starter for the Angels organization.
Notable Events and Milestones
Among Kochanowicz’s career highlights are his first MLB win against the Washington Nationals in August 2024 and his selection to the Angels 40-man roster following his strong 2023 season. His journey from a third-round draft pick in 2019 to MLB contributor represents a testament to his perseverance through challenges including the canceled 2020 minor league season and his 2026 injury.
Jack Kochanowicz Career Statistics
Through the 2026 season, Kochanowicz has compiled a 7–22 record with a 5.84 earned run average and 144 strikeouts across his MLB career. His minor league career includes successful stints at the Single-A, High-A, and Double-A levels before reaching the majors.
Major League Baseball Highlights
Kochanowicz made his MLB debut in July 2024 with the Los Angeles Angels. His first career victory came against the Washington Nationals on August 11, 2024. The 2025 season saw him struggle with a 3–11 record and 6.81 ERA as he faced the challenges of consistent big league hitting. His 2026 season was limited to 13 starts before requiring Tommy John surgery in June.
Minor League Achievements
Prior to reaching the majors, Kochanowicz demonstrated steady development across four minor league seasons. His standout minor league performances include the 2022 California League Pitcher of the Week honor and his combined 5–5 record with a 5.27 ERA between High-A and Double-A in 2023, which directly led to his addition to the Angels 40-man roster.
| Level | Record | ERA | Strikeouts |
|---|---|---|---|
| MLB (2024–2026) | 7–22 | 5.84 | 144 |
| Minor Leagues (2021–2023) | 13–11 | 5.64 | 195 |
Jack Kochanowicz Personal Life
Jack Von Kochanowicz is an American professional baseball pitcher who has dedicated his life to the sport from a young age. Growing up in Rosemont, Pennsylvania, he developed his passion for baseball during his high school years at Harriton High School before pursuing a professional career. He has maintained a focus on continuous improvement throughout his journey through the minor leagues to MLB.
Kochanowicz continues to work toward returning to the mound following his Tommy John surgery in June 2026. The rehabilitation process represents the next chapter in his career as he aims to return to full health and continue his development as a major league pitcher.
2025 Season Performance
The 2025 season marked Kochanowicz first full campaign at the major league level. He appeared in 27 games for the Los Angeles Angels, making 25 starts as he assumed a significant role in the starting rotation. Despite his struggles with a 3–11 record and 6.81 ERA, the experience proved invaluable for his long-term development as a big league pitcher.
His 2025 statistics placed him among the leaders in several negative categories, as his ERA was the highest of any pitcher with at least 110 innings pitched. His strikeout-to-walk rate and home runs allowed per nine innings were also among the worst in the majors, highlighting the adjustments he still needs to make at the highest level. These challenges provided a realistic picture of the growth still needed in his game.
The Angels remained committed to Kochanowicz development throughout the season, providing him with regular opportunities to face major league hitters. The experience gained during these challenging outings will serve him well as he continues his career and works to refine his approach on the mound.