https://community.betfair.com/horse_racing/go/thread/view/94102/23602474/how-are-horse-races-graded-class-3-grade-2-better-than-class-6-grade-1n horseracing is a class 3 grade 2 race better standard than class 6 grade 1. How does it work?https://community.betfair.com/horse_racing/go/thread/view/94102/23602474/how-are-horse-races-graded-class-3-grade-2-better-than-class-6-grade-1?post_id=422806486#422806486n horseracing is a class 3 grade 2 race better standard than class 6 grade 1. How does it work?Wed, 07 Apr 2010 08:09:27 -0500