[1][2] He was a finalist at the Monte-Carlo Championships in 1913 in which he was defeated in three straight sets by Anthony Wilding.

The match report mentioned "Poulin is a dashing volleyer, but his forehand ground shots are weak.

"[3] In 1913 he won the singles title at the tournament in Aix-Les-Bains, defeating P. Wallet in five sets.

In 1911 he reached the final of the Lyons Covered Courts Championships which he lost to Anthony Wilding in straight sets, winning only one game.

[7] Poulin also took part in the 1926 French Championships, making the third round in which he lost in five sets to Nicolae Mișu.