A colt sired by 1989 Kentucky Derby winner and Japanese leading sire Sunday Silence set a record for a foal offered at public auction in Japan when he was sold for 320,000,000 yen (about US$2,962,962) during Monday's opening session of the select foal sale conducted by the Japan Racing Horse Association at Northern Horse Park on the island of Hokkaido. The colt, produced April 9 from the Kentucky-bred mare Franc Argument (by Argument), was purchased by Misako Okada, who operates Big Red Farm.Also during Monday's session, a daughter of Sunday Silence brought the top price ever paid for a filly at auction in Japan when she was acquired by Riichi Kondo for 230,000,000 yen (about US$2,129,629). The April 30 foal was the first foal produced from the Tony Bin mare Air Groove, the Horse of the Year and champion older mare in Japan. Both of the record-setting Sunday Silence foals were consigned by Katsumi Yoshida's Northern Farm.The JRHA reported 91 foals were sold for a gross of 3,525,200,000 yen (about US$32,640,741), with the session average price of 38,738,461 yen (US$358,689) well above last year's average price of 29,220,809 yen for the entire sale. The sale concludes Tuesday.