 Complete the following phrase:  On October 16, 1999, in a ceremony conducted in the winners circle at Keeneland Race Course in Lexington, the U.S. Postal Service honored Secretariat with a 33-cent postage stamp bearing his image. In 2005, Secretariat was featured in ESPN Classics show Whos No. 1? in the episode Greatest Sports Performances. He was the only nonhuman on the list, with his run at Belmont ranking second behind 