LEXINGTON, Ky. - Lane's End Farm has pensioned its flagship stallion and 1992 Horse of the Year, A.P. Indy, because of infertility after the horse, a 22-year-old son of Seattle Slew, failed to impregnate any of his 25 mares so far in 2011, according to the farm.\r\nThe farm's announcement said A.P. Indy suffers from age-related testicular degeneration disease.\r\n&quot;We've been, needless to say, worried about him, but health-wise he's great,&quot; Will Farish, owner of Lane's End, said.\r\nBred by Farish in partnership with W. S. Kilroy, A.P. Indy was a high achiever from the beginning. He brought 1990's highest yearling price, $2.9 million, when he sold to Tomonori Tsurumaki at the Keeneland July select yearling sale.\r\nHe later raced for a partnership that included Tsurumaki and breeders Farish and Kilroy.\r\n&quot;He was a unique horse from the beginning,&quot; Farish said. &quot;He was a beautiful-looking horse and as correct a horse as you'd ever want to see, and he was that way from the very beginning.&quot;\r\nAfter finishing fourth in his first start over six furlongs, he went on to racing stardom with wins in six graded races, four of them Grade 1's: the 1991 Hollywood Futurity and the 1992 Santa Anita Derby, Belmont Stakes, and Breeders' Cup Classic. He was voted champion 3-year-old and Horse of the Year in 1992 and retired to his birthplace at Lane's End with a record of 8 wins and 1 third from 11 starts and career earnings of $2,979,815.\r\nA.P. Indy was North America's leading sire in 2003 and 2006 and was among the leaders in six other years between 2000 and 2009. His most celebrated runners include 2003 Horse of the Year Minehsaft, also a Lane's End stallion; 2006 champion 3-year-old and promising young sire Bernardini; 2007 champion 3-year-old filly Rags to Riches, one of only three fillies ever to win the Belmont and the first in more than century; 2001 champion juvenile filly Tempera; and Canadian champion Serenading.\r\nHis influential sons currently at stud include Bernardini, Pulpit, Mineshaft, and Malibu Moon.\r\nA.P. Indy was advertised this year with a stud fee of $150,000.\r\nA. P. Indy currently is ranked 10th among North America's broodmare sires, as well, and is represented in that category this year by such good runners as Grade 1-placed Plum Pretty and Morning Line. His Grade 1 winners as broodmare sire have included 2010 Kentucky Derby winner Super Saver, Bluegrass Cat, Any Given Saturday, and Mr. Sidney, among others.\r\n&quot;He's been a fantastic sire, and to have been the yearling that he was, the sale-topper, and the classic winner that he was, and then to be a champion sire and now have his sons doing so well, it's just such a rare thing,&quot; Farish said. &quot;I think that's only going to grow.\r\n&quot;I think soundness and durability are his legacy. He's carrying a sire line that is becoming more and more successful, and I think that with the emphasis on speed in this country, bred to his sons and until now bred to him, we're going to be able to continue to produce classic horses.&quot;\r\nA.P. Indy retires from stud duty with more than $112 million in progeny earnings to date.\r\nFarish said that during his retirement A.P. Indy will continue to occupy the stall he has used for nearly 20 years at Lane's End.