Crysencio Jilbert Sylverio Cirro Summerville (born 30 October 2001) is a Dutch professional footballer who plays as a winger for Premier League club West Ham United.

Born in Rotterdam to Afro-Surinamese parents, Summerville played youth football at RVVV Noorderkwartier before joining the Feyenoord academy in 2008.

[22]Summerville further proved instrumental in the Leeds side, where, after an assist to Piroe in a 2–1 win against Plymouth on November 11 2023,[23] he would have a goal contribution in five consecutive games.

[27] Following their win, Leeds progressed to the play-off final, where they lost 0–1 to Southampton at Wembley on 25 May,[28] putting an end to hopes of a rebound return to the Premier League.

[29] On 3 August 2024, Summerville joined Premier League club West Ham United for a fee in excess of £25 million.

[30] He made his West Ham debut on 17 August, coming on as a 73rd minute substitute for Jarrod Bowen in a 2–1 home defeat by Aston Villa.

[33] He won the 2018 UEFA European Under-17 Championship with the Netherlands national under-17 football team, scoring a goal in the group game against Germany and appearing as a substitute in the final against Italy.