Martin Panza in the DRF:

“I think nationally the trend of the trainers is to come into the Breeders’ Cup eight, nine, 10 weeks out instead of four, five, six weeks out,” Panza said. “I think everyone’s preps are struggling to get any field size. The [reduced] foal crop certainly isn’t helping any, so we looked at it and said instead of running six five-horse fields or six-horse fields on Saturday, let’s break these up on Saturdays and Sundays. I think now we have three weekends of Breeders’ Cup preps and spaced them out over Saturdays and Sundays and give it a shot.”

http://www.drf.com/news/major-stakes-reshuffled-belmont-fall-meet