CurlON Wins
36
GNCC Wins
20
Rock Differential
1505
| Year | Location | CurlON | GNCC | Diff. | Winner | |
| 2025 | Toronto Cricket | 391 | 451 | 60 | GNCC | |
| 2024 | Nashua/Petersham | 413 | 411 | 2 | CurlON | |
| 2023 | Niagara Falls | 426 | 353 | 73 | CurlON | |
| 2022 | Utica | 435 | 381 | 54 | CurlON | |
| 2021 | Not Played | |||||
| 2020 | Not Played | |||||
| 2019 | Mississauga CC | 408 | 421 | 13 | GNCC | |
| 2018 | Ardsley/Nutmeg | 425 | 393 | 32 | CurlON | |
| 2017 | Granite CC (Ontario) | 394 | 413 | 19 | GNCC | |
| 2016 | TCC/Broomstones | 472 | 422 | 50 | CurlON | |
| 2015 | Niagra Falls | 420 | 434 | 14 | GNCC | |
| 2014 | Albany/Schenectady | 382 | 477 | 95 | GNCC | |
| 2013 | Guelph | 485 | 408 | 77 | CurlON | |
| 2012 | Utica | 380 | 304 | 76 | CurlON | |
| 2011 | Donalda/Thornhill | 496 | 376 | 120 | CurlON | |
| 2010 | Ardsley/Nutmeg | 357 | 439 | 82 | GNCC | |
| 2009 | Ennismore/Lakefield | 451 | 439 | 12 | CurlON | |
| 2008 | TCC/BStones/Cape | 441 | 492 | 51 | GNCC | |
| 2007 | Leaside | 448 | 449 | 1 | GNCC | |
| 2006 | Albany/Schenectady | 187 | 139 | 48 | CurlON | |
| 2005 | Galt | 484 | 382 | 102 | CurlON | |
| 2004 | Utica | 433 | 346 | 87 | CurlON | |
| 2003 | Oshawa | 455 | 412 | 43 | CurlON | |
| 2002 | TCC/Broomstones | 433 | 339 | 94 | CurlON | |
| 2001 | Guelph | 490 | 388 | 102 | CurlON | |
| 2000 | Albany/Schenectady | 367 | 404 | 37 | GNCC | |
| 1999 | Toronto Bayview | 386 | 304 | 82 | CurlON | |
| 1998 | Utica | 375 | 329 | 46 | CurlON | |
| 1997 | Tor. Cricket/Donalda | 523 | 395 | 128 | CurlON | |
| 1996 | TCC/Broomstones | 352 | 273 | 79 | CurlON | |
| 1995 | Oshawa | 470 | 460 | 10 | CurlON | |
| 1994 | Albany/Schenectady | 317 | 339 | 22 | GNCC | |
| 1993 | Guelph | 430 | 451 | 21 | GNCC | |
| 1992 | Rochester | 342 | 313 | 29 | CurlON | |
| 1991 | Toronto Granite | 473 | 478 | 5 | GNCC | |
| 1990 | Niagra Falls/St. Cath | 459 | 461 | 2 | GNCC | |
| 1989 | Arsdley/Nutmeg | 393 | 497 | 104 | GNCC | |
| 1988 | Dundas/Dundas Val. | 447 | 416 | 31 | CurlON | |
| 1987 | Rochester | 293 | 232 | 61 | CurlON | |
| 1986 | Toronto Granite | 499 | 413 | 86 | CurlON | |
| 1985 | BStones/Winchester | 388 | 416 | 28 | GNCC | |
| 1984 | Galt CC | 426 | 260 | 166 | CurlON | |
| 1983 | Utica | 289 | 294 | 5 | GNCC | |
| 1982 | Oshawa | 402 | 338 | 64 | CurlON | |
| 1981 | Schenectady | 258 | 278 | 20 | GNCC | |
| 1980 | Kingston | 355 | 348 | 7 | CurlON | |
| 1979 | Rochester | 252 | 233 | 19 | CurlON | |
| 1978 | Ottawa | 242 | 166 | 76 | CurlON | |
| 1977 | Broomstones | 223 | 194 | 29 | CurlON | |
| 1976 | Guelph | 188 | 177 | 11 | CurlON | |
| 1975 | Rochester | 211 | 137 | 74 | CurlON | |
| 1974 | Niagra Falls | 208 | 179 | 29 | CurlON | |
| 1973 | Not Played | |||||
| 1972 | Winchester | 225 | 187 | 38 | CurlON | |
| 1971 | Belleville | 177 | 201 | 24 | GNCC | |
| 1970 | St. Andrews | 195 | 227 | 32 | GNCC | |
| 1969 | Hamilton Thistle | 241 | 184 | 57 | CurlON | |
| 1968 | Utica | 180 | 136 | 44 | CurlON | |
| 1967 | Toronto | 197 | 208 | 11 | GNCC | |