Zenezini grew up in Lyon and began skating at the age of eight. He competed in ice dancing and won the French junior title with Melanie Espejo. They were assigned to the 1997 World Junior Championships in Seoul, South Korea and finished ninth. The following season, they placed fifth at the 1998 World Junior Championships in Saint John, New Brunswick, Canada. Zenezini also competed briefly with Nathalie Péchalat and Véronique Delobel. He retired from competition in 2002.