Keeneland has cataloged 161 horses for its 20th April sale of 2-year-olds in training. The number is down 4.7% from last year’s total of 169.

The auction is scheduled for April 9 in Lexington and will start at 4 p.m. (EDT). The sale’s under tack show will be held April 5, beginning at 10:30 a.m.

Graduates of the auction include two-time champion and 2010 Preakness Stakes (gr. I) winner Lookin At Lucky  ; champion Big Brown  , who captured the Kentucky Derby Presented By Yum! Brands (gr. I) and Preakness in 2008; and champion Thunder Gulch  , who triumphed in the Kentucky Derby and Belmont Stakes (gr. I) in 1995.

“The April sale boasts a historically strong graduate record, and that speaks to the top-quality individuals offered,” said Walt Robertson, Keeneland’s vice president of sales. “We are very proud of our classic horses. They are among the more than 100 graded stakes-winning alumni, highlighted recently by such standouts as Wilburn  , Haynesfield  , and Jersey Town  , as well as 3-year-old West Coast stakes winner Midnight Transfer.”

Stallions with offspring in this year’s April auction include A.P. Indy, Bernardini  , Candy Ride  , Curlin  , Distorted Humor  , Dynaformer, Empire Maker, Giant's Causeway  , Hard Spun  , Henrythenavigator, Indian Charlie, Malibu Moon  , Medaglia d'Oro  , More Than Ready  , Pulpit  , Raven's Pass, Scat Daddy  , Smart Strike  , Street Sense  , Tapit  , Tiznow  , and Unbridled's Song  .

The interactive April sale catalog can be viewed online at www.keeneland.com beginning March 6. Print versions of the catalog will be mailed the week of March 19.