I'm in general agreement with miff in that breeding takes a back seat to on track performance when it comes to a question of a horse's ability to stretch out. But since we're moving into Derby future season, and I'm looking at lightly raced bombs, I was wondering what everyone thinks of "mixed" pedigrees.

What peeked my interest was a horse that broke his maiden easily at first asking today at GP - Materiality.

A Pletcher trainee, he's by Afleet Alex, out of a Langfuhr mare. That's a Belmont winner on top, with a dead sprinter on the bottom. I've a bad habit of ignoring the sprint side with "there's plenty of stamina . . ."

So, is half a sprint pedigree a deal breaker, or no?