2003 Canadian Open (curling)
The 2003 Canadian Open curling men's Grand Slam tournament was held November 6–9, 2003 at the Keystone Centre in Brandon, Manitoba.
The total purse for the event was $100,000. The tournament format was a triple knock out with an 8 team playoff. The playoffs were televised on Rogers Sportsnet.
Glen Despins of Regina, Saskatchewan won his lone career grand slam event, earning $30,000 for his team.
Teams
The teams were as follows:| Skip | Third | Second | Lead | Locale |
| Dave Boehmer | Pat Spiring | Richard Daneault | Don Harvey |  Knockout bracketsA EventScores:B EventScores:C EventScores:PlayoffsThe playoff bracket was as follows: |