He made his international test debut in Strasbourg at the age of 22 on 4 November 1989, coming on as a replacement for the injured Didier Camberabero against Australia.
Lacroix played in the 1991 Rugby World Cup - a tournament in which the French team was beaten in the quarter-final stage by the eventual losing finalist, England - and again in the 1995 Rugby World Cup in which he was the top points scorer with 112 points.
In 2000 he left Saracens to join USA Perpignan in France just as Thomas Castaignède signed to take up a position.
Lacroix, a qualified physiotherapist, wanted to work in this domain and only played part-time rugby for Perpignan.
[citation needed] This biographical article relating to French rugby union is a stub.