(Edited Keeneland press release)Keeneland will catalog a record 5,110 horses for its annual September yearling sale. The total is up 4.5% from the former mark of 4,891 that was established in 2004.This year's auction begins on Monday, Sept. 12, and continues through Monday, Sept. 26 with no selling on Friday, Sept. 16. Sessions begin at 10 a.m. (EDT) daily. There are 2,668 colts, 2,440 fillies and two geldings.Keeneland will distribute a booklet, previewing the sale, in early August. The information is now online. Catalogs for the 14-day auction will be available Aug. 22. They will be available online on Aug. 8. The September yearling sale will be the first auction held in Keeneland's newly remodeled sales pavilion. The pavilion has been expanded and renovated since the April sale of 2-year-olds in training.. "The September yearling sale continues to gain in popularity because buyers can find depth in all price ranges" said Keeneland director of sales Geoffrey Russell. "The record number of horses this year can be attributed to the ever-expanding number of horses in the middle market."Gross sales totaled an industry record $324,904,300 during last year's September sale. The average ($96,411) and median ($37,000) were records for the sale.Top price last year was $8 million paid by Hideyuki Mori for a colt by Storm Cat out of Welcome Surprise. Lane's End, as agent, sold the colt.