Cavan Sullivan Bio
Cavan Ayaz Sullivan (born September 28, 2009) is an American professional soccer player who plays as a midfielder for the Philadelphia Union of Major League Soccer. Born in Philadelphia, Pennsylvania, he joined the Philadelphia Union youth academy in 2020 and rose through the ranks to become one of the youngest first-team signings in league history. In 2025, he helped Philadelphia Union claim their second Supporters’ Shield.
Early Life and Background
Cavan Ayaz Sullivan was born on September 28, 2009, in Philadelphia, Pennsylvania, and grew up in a household shaped by soccer. He is of German-Bangladeshi descent through his mother, Heike, who played Division I soccer and captained the University of Pennsylvania women’s team. His father, Brendan Sullivan, had a six-year professional career in the A-League, now known as the USL Championship, after starring at St. Joseph’s Prep in Philadelphia and earning All-Ivy League recognition at the University of Pennsylvania.
As the youngest of four brothers, Cavan was surrounded by the sport from an early age. His oldest brother, Quinn, also plays for the Philadelphia Union, while his other older brothers, Declan and Ronan, attended YSC Academy and played for FC DELCO, an MLS Next affiliate. Cavan’s extended family is steeped in the game as well: his cousin is former American international Chris Albright, his grandfather Larry Sullivan served as head coach at Villanova from 1991 to 2007, and his uncle Bryan Sullivan was a Division I goalkeeper at Philadelphia Textile.
Path to Soccer
Sullivan’s organized playing career began with FC DELCO from 2018 to 2020, a respected youth club in the Philadelphia area. In 2020, he joined the Philadelphia Union youth academy, where he continued to develop alongside his older brothers. As part of that academy setup, Sullivan also helped the club win the 2023 Generation Adidas Cup, an important marker of his progress in the development pipeline.
On the international stage, Sullivan helped the United States boys’ under-15 national team win the 2023 CONCACAF Boys’ Under-15 Championship in the Dominican Republic. He has since progressed to the United States U18 setup. He is also eligible to represent Germany and Bangladesh through his family heritage.
Cavan Sullivan Career
Early Career (2024)
Sullivan made his professional debut on March 24, 2024, entering in the 56th minute of an MLS Next Pro match for Philadelphia Union II. He marked the occasion with an assist in the 86th minute, helping Philadelphia to a 2–1 victory. The appearance confirmed the promise he had shown in the academy and set the stage for a historic homegrown contract.
On May 9, 2024, Sullivan signed a homegrown contract with the Philadelphia Union running through 2028. The deal made him the fifth-youngest player to sign a first-team contract in Major League Soccer history and was reported as the most expensive homegrown deal in MLS history. Per a clause confirmed to ESPN, he will be able to transfer to Premier League club Manchester City once he turns 18.
MLS Breakthrough (2024)
Sullivan made his Major League Soccer debut for the Philadelphia Union on July 17, 2024. At 14 years and 293 days old, he became the youngest player to appear in a league match for a major professional league in the United States, breaking Freddy Adu’s 2004 record by 13 days. The debut underlined both his technical maturity and the trust the Union placed in his development.
On July 23, 2024, he played for the MLS Next East team in the MLS Next All-Star Game and was named the most valuable player after scoring a goal and adding an assist in the East’s 4–2 victory. Across the same developmental year, he was loaned back to Philadelphia Union II, where he continued to gain senior-level minutes.
Philadelphia Union Era (2024–Present)
Sullivan became a regular presence in the Philadelphia Union first team from the 2024 season onward, while also featuring on loan for Philadelphia Union II. Wearing the number 6 shirt, he slotted into a squad competing at the top of the Eastern Conference and contending for domestic honors. In 2025, he helped Philadelphia Union to their second-ever Supporters’ Shield, cementing his status as a key contributor at a championship level.
On February 26, 2026, Sullivan scored his first two goals for the Philadelphia Union and added two assists in a 7–0 win over Defense Force in round one of the CONCACAF Champions Cup. The performance showcased his growth as a goal-scoring midfielder on the continental stage and hinted at the broader attacking role he is expected to play in coming seasons.
Driving Style and Strengths
No verified driving-style details are available.
Notable Events and Milestones
Sullivan’s milestone moments include becoming the youngest player to appear in an MLS match, eclipsing Freddy Adu’s long-standing record, and being named MVP of the MLS Next All-Star Game in 2024. He also helped the United States U15 win the 2023 CONCACAF Boys’ Under-15 Championship, and his 2026 two-goal, two-assist CONCACAF Champions Cup display marked his first senior goals for the Philadelphia Union.
Cavan Sullivan Career Wins
Sullivan is still in the early phase of his senior career, but he has already collected meaningful team honors. His breakthrough came through the Philadelphia Union academy and senior squad, with a Supporters’ Shield in 2025 standing as his first major piece of senior silverware. He also contributed to youth-level successes that shaped his development.
Philadelphia Union Highlights
Sullivan was part of the Philadelphia Union side that won the 2025 Supporters’ Shield, the club’s second such title. Earlier in his development, he helped the Philadelphia Union academy win the 2023 Generation Adidas Cup, foreshadowing his impact at the senior level.
Other Wins & Performances
At international youth level, Sullivan helped the United States U15 win the 2023 CONCACAF Boys’ Under-15 Championship in the Dominican Republic, establishing himself as a standout of his age group.
Cavan Sullivan Family
Family Background and Racing Lineage
No racing lineage details are available; see Personal Life below for his soccer family background.
Personal Life
Cavan is the youngest of four brothers, all of whom have played competitive soccer. His father, Brendan, played professionally in the A-League (now the USL Championship) and later coached at the University of Pennsylvania. His mother, Heike, captained the Penn women’s team at the Division I level. His maternal grandfather is Klaus Krippendorff, and his extended family includes cousin Chris Albright, grandfather Larry Sullivan, and uncle Bryan Sullivan, all tied to high-level American soccer.
2025 Season Performance
Sullivan’s 2025 season with the Philadelphia Union marked a significant step forward in his young career. Establishing himself more consistently in the first team, he contributed to a campaign that ended with Philadelphia Union lifting the Supporters’ Shield, the club’s second in history. The result reflected both his individual growth and the squad’s overall strength across the regular season.
Throughout the year, Sullivan balanced senior minutes with continued international involvement at the United States U18 level, building on his earlier U15 success. His combination of league play, cup competition, and international duty gave him a full developmental workload for a player of his age. The 2025 Supporters’ Shield win provided tangible silverware to anchor his rising profile.
