In both finals they defeated the South African duo of Marcos Ondruska and Clinton Marsh in three sets, 6–7, 7–6, 9–7 at Roland Garros and 7–6(5) 4–6 6–3.

Then in August Leblanc teamed with another Montrealer, Greg Rusedski, to capture the U.S. Open junior doubles crown, defeating Mårten Renström and Mikael Tillström in the final, 6–7 6–3 6–4.

In ATP Tour and Grand Slam events, Leblanc posted a career win–loss of 8 and 22 with his best result being reaching the quarter-finals of the Canadian Open in 1991, partnering Lareau.

He played in the main draw of one Grand Slam event at senior level, the 1997 Australian Open – he and partner Mark Keil lost in the first round.

[6] Leblanc sole rubber appearance came surprisingly in singles, in a 1997 America Group I semi-final tie versus Venezuela, played in April.