LEXINGTON, Ky. - A relaxed and affable Chad Brown worked several sets of horses Sunday morning at Keeneland, and why wouldn’t Brown be walking on air? Brown had runners Saturday at four racecourses, and from 14 races his stable ended the day with eight winners. Not a bad haul. At Aqueduct, Brown won the Bay Shore with Reasoned Analysis and the Distaff with Shidabhuti, and capped the day here in the Blue Grass Stakes with the most important horse in Brown’s stable right now, Sierra Leone.