Sandgroper,the dog that won it's lasr 3 IS NOT a selection.How did the others go?
Anchor
In your example I would back the dog coming off the win in the higher grade race.
Class,as such,is virtually impossible to define in greyhound racing.IMO we need to rely to a large extent on the grades to determine the class of the race,then examine the class of the dogs racing in them.
Personally I never bet in the lower grade races.I WILL NOT bet on a dog going up in grade until it shows it can take the next step and be competitive.
Example 1)A dog blitzes the field by 6 lengths in a low grade race,and runs fast time.Then it goes up in grade next start.It is unlikely to repeat that performance,because it is now racing against dogs that can run the same or better times than it did in beating a lower grade field.
Okay,some promising young dogs can and will do it,but the ones that do usually have a big wrap on them,eliminating any value at all.
Example 2)
A dog coming back in grade(sorry to disagree with you sandgroper)is NOT necessarily the class runner.If it has not been competitive in the higher grade it is merely coming back to it's right grade.