LeBrun turned pro with the Kitchener-Waterloo Beavers in 1961-62 and then played for the Vancouver Canucks in 1962-63. He sat out the 1963-64 season due to spinal surgery. After that year he spent most of his career in the minor pros, except for 2 more games with the Rangers in 1965-66.
He retired in 1974 after spending six seasons with the San Diego Gulls.
- 1965-66 Best Defenceman (Central Hockey League)