On February 19, 1967, Hafey stepped into the ring against Ken MacIntyre for his first professional boxing match. He met MacIntyre in four matches that year, splitting them between
Baie-Sainte-Anne, New Brunswick, and New Glasgow, with each location yielding one loss and one draw. Hafey challenged the unbeaten
Al Ford, who held a perfect 28-0 record, for the Canadian lightweight title in New Glasgow during May 1970. He lost the twelve-round bout by split decision.
Important win over Canadian featherweight champion Rocky MacDougall, July 1970 He scored a fourth-round technical knockout against Canadian featherweight champion
Rocky MacDougall in July 1970. Another significant win came in June 1972 when he defeated Gerald Bouchard, a future Canadian middleweight champion. He traveled to
California alongside his brother Art to fight on on the undercard of
Muhammad Ali vs. Ken Norton in March 1973. Fighting with a sprained foot, he dropped a decision to Gonzalo Rodriguez in his only appearance in
San Diego. Hafey sealed a five-year contract with Ottawa fight promoter Vern Stevenson in November 1974, and after the signing, he claimed victories in a pair of U.S. bouts scheduled with only 48 hours between them.
Loss against undefeated Wilfred Benítez, December 1974 At New York's
Felt Forum in December 1974, Hafey fought
Wilfred Benítez (who had never lost a match) and lost.
Taking the Canadian middleweight championship, May 1975 Lawrence Hafey won the Canadian middleweight title in May 1975.
Loss against reigning Canadian and British Commonwealth welterweight champion Clyde Gray, December 1975 He faced Canadian and British Commonwealth welterweight champion
Clyde Gray for the
Commonwealth Boxing Council welterweight title on December 1, 1975. Entering the ring with a 40-14-2 record, he was stopped at 2:31 of the eighth round. A record 6,200 fans filled the
Halifax Forum to watch the Nova Scotian fighters. By September 1975, Jerry Fraser had taken over as his manager following the end of his association with Vern Stevenson. His
Montreal debut came that month at age 26, when he defeated Walpole's Paul Osborne at the
Paul Sauvé Arena, earning himself a shot at the title. Hafey traveled to London, England, in May 1979, fighting
Dave Boy Green at Empire Pool (now
Wembley Arena). Following a TKO loss, he lost five straight fights to mark the end of his career, including losses to
Chris Clarke,
Sean Mannion, and
Mario Cusson. ==Professional boxing record==