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OFSAA | 47.60 | 2003 | Mary Ward CSS | O. Ugiagbe, Z. Gill, L. Gonsalves, L. Wilson | Can Inter | 47.60 | 2003 | Mary Ward CSS - Scarborough | | Centrals | 48.34 | May 27, 2014 | Pickering HS - Ajax | A Hendricks, K Hyman, D Henry, Z McIntosh | GBSSA | 50.60 | 1991 | Barrie Central CI | | LOSSA | 49.18 | May 17, 2016 | Notre Dame - Ajax | | YRAA | 50.45 | May 17, 2012 | Joan of Arc | |
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