The United States has produced plenty of teenage prospects. It has never produced one quite like Cavan Sullivan. At 17, he is a senior international goalscorer, the youngest MLS Player of the Month in league history, and a player who has matched the league record for goal contributions by a teenager in a single season.
The obvious comparisons are Landon Donovan, Clint Dempsey and Christian Pulisic. They don’t fit, and not because Sullivan has outdone them. Those are finished careers, measured at their peaks. Sullivan is 17 and has three senior caps. But on output at the same age, he is already ahead of that group. Pulisic had signed for Borussia Dortmund at that stage but was not a regular. Sullivan is a starter and a difference-maker in the top division of his country.
The fairer question is who he looked like at 17, and for that there is one name: Giuseppe Rossi.
Rossi was born and raised in Clifton, New Jersey. At 12, he moved to Italy with his father to join Parma’s youth setup, and Manchester United bought his contract when he was 17. He made his first-team debut in a League Cup tie against Crystal Palace in November 2004, and scored his first Premier League goal at Sunderland in October 2005, nine minutes after coming off the bench.
Sullivan has taken a different road to a similar destination. He joined the Philadelphia Union Academy at 10, debuted for Union II at 14, and became the youngest player to appear in an MLS match at 14 years and 293 days, beating Freddy Adu’s mark. He then signed the most expensive homegrown deal in league history, with a clause that sends him to Manchester City after his 18th birthday, which has been reported as January 2028. He has not joined City yet, but they already know him: at 15 he scored in a 16-minute appearance for their Under-21 side at a summer camp.
In 2026, Sullivan has 20 goal contributions in MLS regular-season play, 7 goals and 13 assists, which matches Diego Fagundez’s 2013 record for a teenager in one season. In September alone, he had nine goal contributions in four appearances, more than any other player in the league, and he went through a stretch of eight straight matches with a goal or an assist, the longest run by a teenager in MLS history. The Union went from last place in the East to a playoff spot, and have extended a club-record unbeaten run with Sullivan in the middle of it.
Then came the national team. He started his USMNT debut against Peru in a 4-1 win, the youngest American to start a game since Adu in 2006, and came off the bench against Chile. Four days later, against Mexico, he scored from distance in the 63rd minute at 17 years and five days old. He took the youngest-scorer record from Mathis Albert, who had broken Pulisic’s mark just four days earlier. Sullivan called it the biggest pinch-me moment ever.
Nothing Rossi did at 17 looks like that. His senior league goals came at 18 and his breakthrough years at Villarreal came in his 20s.
3 facts to keep in mind
The level is different. Rossi’s early numbers were at an elite academy; Sullivan’s are in MLS, a league with lower defensive standards than the Premier League or La Liga. Output in MLS does not translate automatically.
The roles are different. Rossi was a finisher. Sullivan is a midfielder who creates as much as he scores. The comparison is about trajectory and early output, not about playing the same position.
Early records guarantee nothing. Freddy Adu is the reminder. The path from phenomenon to Premier League regular runs through loans, injuries and patience. Manchester City could send Sullivan to one of its sister clubs in Europe before he plays at the Etihad.
Can He Be as good as Rossi, or better?
Rossi’s bar is high but clear: 82 goals in 192 games at Villarreal, 32 in a single season, an Olympic Golden Boot, and 30 caps for Italy. He did all that despite two ACL tears that stalled him at his peak. That is the fascinating part of the comparison, because the biggest thing separating Rossi from an even bigger career was not talent, it was health.
So yes, Sullivan can match Rossi, and he has a real shot at beating him. His output at 17 is stronger. His game is built on vision as well as finishing, which tends to age well. And he has the chance to do something Rossi never did: carry the United States’ colors through an entire career. Rossi chose Italy. Sullivan has already given his answer.
Stay healthy, keep developing, and the question may stop being whether he can be as good as Rossi.
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