As a Builder: Founded the Quebec Deaf Golfers Association in 1969. Was the President of QDGA from 1969 to 1973 and from 1987 to 1988. Besides the presidency, he served in other positions from 1974 to 1977, from 1982 to 1986, and from 1990 to 1992.

As a Golfer: Over the 31 years with the Association, he participated 27 times as a golfer in the championships hosted by QDGA (1969 to 1999). Out of 27 times, he won 19 championships (1969, 1970, 1971, 1973, 1976, 1977, 1978, 1981, 1984, 1985, 1986, 1987, 1989, 1991, 1993, 1995, 1997, 1998, and 1999). He scored an average 83 in 27 championships. He shot a 71 in 1987 - a record of lowest score to-date (as of September 2005). In 1995, Pierre was the first Quebecois to participate at the World Deaf Golf Championship held in England.  He was the member of the Canadian Team with Dale Proctor of BC, Jonathan Rose of ON, Rob Cundy of AB, Larry Farovitch (Arizona), and Grant Underschultz of AB. Unfortunately, LeSiège passed away on October 3rd, 1999 in St. Eustache, Quebec.  He was 54 years old and he spent his whole life playing golf, his favorite pastime.  Also, he was a great athlete that the Quebec deaf community (mostly deaf golfers) lost a foremost leader.  On the golf course, Pierre was a great golfer with gracious swing.  Every week, he played 4 or 5 rounds - no wonder he was such a dominant figure in the 19 championships he won over 31 years of QDGA.  In September 2000, QDGA honoured his memory by creating the "Pierre LeSiège" trophy, given annually to the best golfer who achieved the lowest score of a championship (Low Gross).  Alain Turpin was the first recipient of the trophy after shooting a winning score of 79.