"Hurricane Helen", as the Canadian press dubbed her for her fiery demeanour, achieved a career-high ranking of world No.

During her time on the WTA Tour, Kelesi recorded wins over Arantxa Sánchez Vicario, Conchita Martínez, Jana Novotná, Manuela Maleeva-Fragnière, Helena Suková and Pam Shriver.

Kelesi's game was characterized by aggressive baseline play, with a powerful top-spin forehand and two-handed backhand.

Her professional career came to an end in 1995 when a brain tumour the size of a tennis ball was discovered following months of headaches, dizziness and vision problems.

Kelesi successfully recovered and began coaching young children in Canada in the late 1990s.